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⚡ 🐛 🔤 v0.9.4-alpha (#42)

Browse Source 
* 🐛 fixes #41

* ⚡ adjust package size limits

* 🔤

* 📺 requestIdleCallback doesn need to be global

* 🔤 corrects irland page headers

* 📺 version

* ⚡ Signal ← SignalReadonly

* 🐛 ensures only one disconncetd listener

…for cleanup

* ⚡ 🔤 Better build and improve texting

* 🐛 logo alignemt (due to gh)

* 🔤 md enhancements

* 🔤 ⚡ products
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9
CONTRIBUTING.md
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@ -75,11 +75,14 @@ where everyone feels comfortable participating.
…see [BS folder](./bs/README.md) for more info.
## Categorizing [![git3moji](https://img.shields.io/badge/git3moji%E2%80%93v1-%E2%9A%A1%EF%B8%8F%F0%9F%90%9B%F0%9F%93%BA%F0%9F%91%AE%F0%9F%94%A4-fffad8.svg?style=flat-square)](https://robinpokorny.github.io/git3moji/) <!-- editorconfig-checker-disable-line -->
We use [git3moji](https://git3moji.netlify.app/) for commit messages, issue titles, pull request titles and in other
areas. To make categorizing quick and consistent.
## Commit Guidelines
We use
[![git3moji](https://img.shields.io/badge/git3moji%E2%80%93v1-%E2%9A%A1%EF%B8%8F%F0%9F%90%9B%F0%9F%93%BA%F0%9F%91%AE%F0%9F%94%A4-fffad8.svg?style=flat-square)](https://robinpokorny.github.io/git3moji/) <!-- editorconfig-checker-disable-line -->
for commit messages. This helps keep the commit history clear and consistent.
We use [git3moji](https://git3moji.netlify.app/) for commit messages. This helps keep the commit history clear and
consistent.
```
:emoji: Short summary of the change

61
README.md
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@ -1,18 +1,11 @@
**Alpha**
| [source code on GitHub](https://github.com/jaandrle/deka-dom-el)
| [*mirrored* on Gitea](https://gitea.jaandrle.cz/jaandrle/deka-dom-el)
| [![git3moji](https://img.shields.io/badge/git3moji%E2%80%93v1-%E2%9A%A1%EF%B8%8F%F0%9F%90%9B%F0%9F%93%BA%F0%9F%91%AE%F0%9F%94%A4-fffad8.svg?style=flat-square)](https://robinpokorny.github.io/git3moji/) <!-- editorconfig-checker-disable-line -->
<p align="center">
<img src="docs/assets/logo.svg" alt="Deka DOM Elements Logo" width="180" height="180">
</p>
# Deka DOM Elements (dd\<el\> or DDE)
| [Docs](https://jaandrle.github.io/deka-dom-el "Official documentation and guide site")
| [NPM](https://www.npmjs.com/package/deka-dom-el "Official NPM package page")
| [GitHub](https://github.com/jaandrle/deka-dom-el "Official GitHub repository")
([*Gitea*](https://gitea.jaandrle.cz/jaandrle/deka-dom-el "GitHub repository mirror on my own Gitea instance"))
***Vanilla for flavouring — a full-fledged feast for large projects***
*…use simple DOM API by default and library tools and logic when you need them*
```javascript
// 🌟 Reactive component with clear separation of concerns
document.body.append(
@ -20,28 +13,23 @@ document.body.append(
);
function EmojiCounter({ initial }) {
// ✨ State - Define reactive data
// ✨ - Define reactive data
const count = S(0);
const emoji = S(initial);
const textContent = S(() => `Hello World ${emoji.get().repeat(count.get())}`);
/** @param {HTMLOptionElement} el */
const isSelected= el=> (el.selected= el.value===initial);
// 🔄 View - UI updates automatically when signals change
// 🔄 - UI updates automatically when signals change
return el().append(
el("p", {
className: "output",
textContent: S(() =>
`Hello World ${emoji.get().repeat(count.get())}`),
}),
el("p", { textContent, className: "output" }),
// 🎮 Controls - Update state on events
// 🎮 - Update state on events
el("button", { textContent: "Add Emoji" },
on("click", () => count.set(count.get() + 1))
on("click", () => count.set(count.get() + 1)),
),
el("select", null, on.defer(el=> el.value= initial),
on("change", e => emoji.set(e.target.value))
el("select", null,
on.defer(el=> el.value= initial),
on("change", e => emoji.set(e.target.value)),
).append(
el(Option, "🎉"),
el(Option, "🚀"),
@ -53,6 +41,13 @@ function Option({ textContent }){
return el("option", { value: textContent, textContent });
}
```
*…use simple DOM API by default and library tools and logic when you need them*
<p align="center">
<img src="docs/assets/logo.svg" alt="Deka DOM Elements Logo" width="180" height="180">
</p>
# Deka DOM Elements (dd\<el\> or DDE)
Creating reactive elements, components, and Web Components using the native
[IDL](https://developer.mozilla.org/en-US/docs/Glossary/IDL)/JavaScript DOM API enhanced with
@ -64,19 +59,21 @@ Creating reactive elements, components, and Web Components using the native
- ☑️ **Lightweight** — ~10-15kB minified (original goal 10kB) with **zero**/minimal dependencies
- ✅ **Declarative & functional approach** for clean, maintainable code
- ✅ **Signals and events** for reactive UI
- ✅ **Auto-releasing resources** for memory management but nice development experience
- ✅ **Memoization for performance** — optimize rendering with intelligent caching
- ✅ **Optional build-in signals** with support for custom reactive implementations (#39)
- ✅ **Server-side rendering** support via [jsdom](https://github.com/jsdom/jsdom)
- ☑️ **Optional build-in signals** with support for custom reactive implementations (#39)
- ☑️ **Server-side rendering** support via [jsdom](https://github.com/jsdom/jsdom)
- ✅ **TypeScript support**
- ☑️ **Support for debugging with browser DevTools** without extensions
- ✅ **Support for debugging with browser DevTools** without extensions
- ☑️ **Enhanced Web Components** support
## Getting Started
### Documentation
### Quick Links
- [**Documentation and Guide**](https://jaandrle.github.io/deka-dom-el)
- [**Examples**](https://jaandrle.github.io/deka-dom-el/p15-examples.html)
- [**Changelog**](https://github.com/jaandrle/deka-dom-el/releases)
### Installation
@ -87,7 +84,7 @@ npm install deka-dom-el --save
…or via CDN / Direct Script:
For CDN links and various build formats (ESM/IIFE, with/without signals, minified/unminified), see the [interactive
format selector](https://jaandrle.github.io/deka-dom-el/) on the documentation site.
format selector](https://jaandrle.github.io/deka-dom-el/#h-getting-started) on the documentation site.
```html
<!-- Example with IIFE build (creates a global DDE object) -->
@ -141,9 +138,9 @@ get started, coding standards, commit guidelines, and the pull request process.
interfaces or HTML code.
- [pota](https://pota.quack.uy/) — small and pluggable Reactive Web Renderer. It's compiler-less, includes an html
function, and a optimized babel preset in case you fancy JSX.
- [jaandrle/dollar_dom_component](https://github.com/jaandrle/dollar_dom_component) —
Functional DOM components without JSX/virtual DOM
- [TarekRaafat/eleva](https://github.com/TarekRaafat/eleva) — A minimalist, lightweight, pure vanilla JavaScript
frontend runtime framework.
- [didi/mpx](https://github.com/didi/mpx) — Mpx，一款具有优秀开发体验和深度性能优化的增强型跨端小程序框架
- [mxjp/rvx](https://github.com/mxjp/rvx) — A signal based frontend framework
- [jaandrle/dollar_dom_component](https://github.com/jaandrle/dollar_dom_component) —
Functional DOM components without JSX/virtual DOM (my old library)

3
bs/docs.js
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@ -2,7 +2,7 @@
/* jshint esversion: 11,-W097, -W040, module: true, node: true, expr: true, undef: true *//* global echo, $, pipe, s, fetch, cyclicLoop */// editorconfig-checker-disable-line
echo("Building static documentation files…");
echo("Preparing…");
import { path_target, pages as pages_registered, styles, dispatchEvent, t } from "../docs/ssr.js";
import { path_target, pages as pages_registered, styles, currentPageId, dispatchEvent, t } from "../docs/ssr.js";
import { createHTMl } from "./docs/jsdom.js";
import { register, queue } from "../jsdom.js";
const pkg= s.cat("package.json").xargs(JSON.parse);
@ -28,6 +28,7 @@ for(const { id, info } of pages){
);
const { el }= await register(serverDOM.dom);
const { page }= await import(`../docs/${id}.html.js`);
currentPageId(id)
serverDOM.document.body.append(
el(page, { pkg, info }),
);

35
dist/esm-with-signals.js vendored
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@ -41,6 +41,11 @@ function observedAttributes(instance, observedAttribute2) {
function kebabToCamel(name) {
return name.replace(/-./g, (x) => x[1].toUpperCase());
}
function requestIdle() {
return new Promise(function(resolve) {
(globalThis.requestIdleCallback || requestAnimationFrame)(resolve);
});
}
// src/dom-lib/common.js
var enviroment = {
@ -179,11 +184,6 @@ function connectionsChangesObserverConstructor() {
is_observing = false;
observer.disconnect();
}
function requestIdle() {
return new Promise(function(resolve) {
(requestIdleCallback || requestAnimationFrame)(resolve);
});
}
async function collectChildren(element) {
if (store.size > 30)
await requestIdle();
@ -696,13 +696,10 @@ var queueSignalWrite = /* @__PURE__ */ (() => {
})();
// src/signals-lib/signals-lib.js
var Signal = oCreate(null, {
var SignalReadOnly = oCreate(null, {
get: { value() {
return read(this);
} },
set: { value(...v) {
return write(this, ...v);
} },
toJSON: { value() {
return read(this);
} },
@ -710,9 +707,9 @@ var Signal = oCreate(null, {
return this[mark] && this[mark].value;
} }
});
var SignalReadOnly = oCreate(Signal, {
set: { value() {
return;
var Signal = oCreate(SignalReadOnly, {
set: { value(...v) {
return write(this, ...v);
} }
});
function isSignal(candidate) {
@ -824,7 +821,7 @@ signal.el = function(s, map) {
};
function requestCleanUpReactives(host) {
if (!host || !host[key_reactive]) return;
(requestIdleCallback || setTimeout)(function() {
requestIdle().then(function() {
host[key_reactive] = host[key_reactive].filter(([s, el]) => el.isConnected ? true : (removeSignalListener(...s), false));
});
}
@ -889,9 +886,10 @@ var signals_config = {
function removeSignalsFromElements(s, listener, ...notes) {
const { current } = scope;
current.host(function(element) {
if (!element[key_reactive]) element[key_reactive] = [];
const is_first = !element[key_reactive];
if (is_first) element[key_reactive] = [];
element[key_reactive].push([[s, listener], ...notes]);
if (current.prevent) return;
if (!is_first || current.prevent) return;
on.disconnected(
() => (
/*! Clears all Signals listeners added in the current scope/host (`S.el`, `assign`, …?).
@ -906,7 +904,7 @@ var cleanUpRegistry = new FinalizationRegistry(function(s) {
});
function create(is_readonly, value, actions) {
const varS = oCreate(is_readonly ? SignalReadOnly : Signal);
const SI = toSignal(varS, value, actions, is_readonly);
const SI = toSignal(varS, value, actions);
cleanUpRegistry.register(SI, SI[mark]);
return SI;
}
@ -918,7 +916,7 @@ var protoSigal = oAssign(oCreate(), {
this.skip = true;
}
});
function toSignal(s, value, actions, readonly = false) {
function toSignal(s, value, actions) {
const onclear = [];
if (typeOf(actions) !== "[object Object]")
actions = {};
@ -934,8 +932,7 @@ function toSignal(s, value, actions, readonly = false) {
actions,
onclear,
host,
listeners: /* @__PURE__ */ new Set(),
readonly
listeners: /* @__PURE__ */ new Set()
}),
enumerable: false,
writable: false,

6
dist/esm-with-signals.min.js vendored
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File diff suppressed because one or more lines are too long

10
dist/esm.js vendored
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@ -25,6 +25,11 @@ function onAbort(signal, listener) {
signal.removeEventListener("abort", listener);
};
}
function requestIdle() {
return new Promise(function(resolve) {
(globalThis.requestIdleCallback || requestAnimationFrame)(resolve);
});
}
// src/dom-lib/common.js
var enviroment = {
@ -163,11 +168,6 @@ function connectionsChangesObserverConstructor() {
is_observing = false;
observer.disconnect();
}
function requestIdle() {
return new Promise(function(resolve) {
(requestIdleCallback || requestAnimationFrame)(resolve);
});
}
async function collectChildren(element) {
if (store.size > 30)
await requestIdle();

2
dist/esm.min.js vendored
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35
dist/iife-with-signals.js vendored
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@ -86,6 +86,11 @@ var DDE = (() => {
function kebabToCamel(name) {
return name.replace(/-./g, (x) => x[1].toUpperCase());
}
function requestIdle() {
return new Promise(function(resolve) {
(globalThis.requestIdleCallback || requestAnimationFrame)(resolve);
});
}
// src/dom-lib/common.js
var enviroment = {
@ -224,11 +229,6 @@ var DDE = (() => {
is_observing = false;
observer.disconnect();
}
function requestIdle() {
return new Promise(function(resolve) {
(requestIdleCallback || requestAnimationFrame)(resolve);
});
}
async function collectChildren(element) {
if (store.size > 30)
await requestIdle();
@ -741,13 +741,10 @@ var DDE = (() => {
})();
// src/signals-lib/signals-lib.js
var Signal = oCreate(null, {
var SignalReadOnly = oCreate(null, {
get: { value() {
return read(this);
} },
set: { value(...v) {
return write(this, ...v);
} },
toJSON: { value() {
return read(this);
} },
@ -755,9 +752,9 @@ var DDE = (() => {
return this[mark] && this[mark].value;
} }
});
var SignalReadOnly = oCreate(Signal, {
set: { value() {
return;
var Signal = oCreate(SignalReadOnly, {
set: { value(...v) {
return write(this, ...v);
} }
});
function isSignal(candidate) {
@ -869,7 +866,7 @@ var DDE = (() => {
};
function requestCleanUpReactives(host) {
if (!host || !host[key_reactive]) return;
(requestIdleCallback || setTimeout)(function() {
requestIdle().then(function() {
host[key_reactive] = host[key_reactive].filter(([s, el]) => el.isConnected ? true : (removeSignalListener(...s), false));
});
}
@ -934,9 +931,10 @@ var DDE = (() => {
function removeSignalsFromElements(s, listener, ...notes) {
const { current } = scope;
current.host(function(element) {
if (!element[key_reactive]) element[key_reactive] = [];
const is_first = !element[key_reactive];
if (is_first) element[key_reactive] = [];
element[key_reactive].push([[s, listener], ...notes]);
if (current.prevent) return;
if (!is_first || current.prevent) return;
on.disconnected(
() => (
/*! Clears all Signals listeners added in the current scope/host (`S.el`, `assign`, …?).
@ -951,7 +949,7 @@ var DDE = (() => {
});
function create(is_readonly, value, actions) {
const varS = oCreate(is_readonly ? SignalReadOnly : Signal);
const SI = toSignal(varS, value, actions, is_readonly);
const SI = toSignal(varS, value, actions);
cleanUpRegistry.register(SI, SI[mark]);
return SI;
}
@ -963,7 +961,7 @@ var DDE = (() => {
this.skip = true;
}
});
function toSignal(s, value, actions, readonly = false) {
function toSignal(s, value, actions) {
const onclear = [];
if (typeOf(actions) !== "[object Object]")
actions = {};
@ -979,8 +977,7 @@ var DDE = (() => {
actions,
onclear,
host,
listeners: /* @__PURE__ */ new Set(),
readonly
listeners: /* @__PURE__ */ new Set()
}),
enumerable: false,
writable: false,

4
dist/iife-with-signals.min.js vendored
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10
dist/iife.js vendored
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@ -67,6 +67,11 @@ var DDE = (() => {
signal.removeEventListener("abort", listener);
};
}
function requestIdle() {
return new Promise(function(resolve) {
(globalThis.requestIdleCallback || requestAnimationFrame)(resolve);
});
}
// src/dom-lib/common.js
var enviroment = {
@ -205,11 +210,6 @@ var DDE = (() => {
is_observing = false;
observer.disconnect();
}
function requestIdle() {
return new Promise(function(resolve) {
(requestIdleCallback || requestAnimationFrame)(resolve);
});
}
async function collectChildren(element) {
if (store.size > 30)
await requestIdle();

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22
docs/components/code.html.js
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@ -1,4 +1,4 @@
import { registerClientFile, styles } from "../ssr.js";
import { page_id, registerClientFile, styles } from "../ssr.js";
const host= "."+code.name;
styles.css`
/* Code block styling */
@ -177,6 +177,9 @@ ${host}:hover .copy-button {
}
`;
import { el } from "deka-dom-el";
/**
* @typedef {"js"|"ts"|"html"|"css"|"shell"|"-"} Language
* */
/**
* Prints code to the page and registers flems to make it interactive.
* @param {object} attrs
@ -184,15 +187,17 @@ import { el } from "deka-dom-el";
* @param {string} [attrs.className]
* @param {URL} [attrs.src] Example code file path
* @param {string} [attrs.content] Example code
* @param {"js"|"ts"|"html"|"css"|"shell"} [attrs.language="js"] Language of the code
* @param {string} [attrs.page_id] ID of the page, if setted it registers shiki
* @param {Language} [attrs.language="-s"] Language of the code
* */
export function code({ id, src, content, language= "js", className= host.slice(1), page_id }){
if(src) content= s.cat(src);
export function code({ id, src, content, language= "-", className= host.slice(1) }){
if(src){
content= s.cat(src);
if(language=== "-") language= /** @type {Language} */(src.pathname.split(".").pop());
}
content= normalizeIndentation(content);
let dataJS;
if(page_id){
registerClientPart(page_id);
if(language!== "-"){
registerClientPart();
dataJS= "todo";
}
return el("div", { id, className, dataJS, tabIndex: 0 }).append(
@ -204,8 +209,7 @@ export function pre({ content }){
return el("pre").append(el("code", content.trim()));
}
let is_registered= {};
/** @param {string} page_id */
function registerClientPart(page_id){
function registerClientPart(){
if(is_registered[page_id]) return;
// Add Shiki with a more reliable loading method

5
docs/components/converter.html.js
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@ -1,4 +1,4 @@
import { styles } from "../ssr.js";
import { page_id, styles } from "../ssr.js";
styles.css`
#html-to-dde-converter {
@ -149,12 +149,11 @@ import { ireland } from "./ireland.html.js";
import { el } from "deka-dom-el";
const fileURL= url=> new URL(url, import.meta.url);
export function converter({ page_id }){
export function converter(){
registerClientPart(page_id);
return el(ireland, {
src: fileURL("./converter.js.js"),
exportName: "converter",
page_id,
});
}

5
docs/components/example.html.js
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@ -1,4 +1,4 @@
import { styles } from "../ssr.js";
import { page_id, styles } from "../ssr.js";
const host= "."+example.name;
styles.css`
${host} {
@ -119,9 +119,8 @@ import { relative } from "node:path";
* @param {URL} attrs.src Example code file path
* @param {"js"|"ts"|"html"|"css"} [attrs.language="js"] Language of the code
* @param {"normal"|"big"} [attrs.variant="normal"] Size of the example
* @param {string} attrs.page_id ID of the page
* */
export function example({ src, language= "js", variant= "normal", page_id }){
export function example({ src, language= "js", variant= "normal" }){
registerClientPart(page_id);
const content= s.cat(src).toString()
.replaceAll(/ from "deka-dom-el(\/signals)?";/g, ' from "./esm-with-signals.js";');

1
docs/components/examples/case-studies/data-dashboard.js
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@ -303,6 +303,7 @@ document.body.append(
padding: 1rem;
margin-bottom: 1.5rem;
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
overflow: auto;
}
.loading-spinner {

501
docs/components/examples/case-studies/products.js Normal file
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@ -0,0 +1,501 @@
import { el, on } from "deka-dom-el";
import { S } from "deka-dom-el/signals";
export function ProductCatalog() {
const itemsPerPage = 5;
const products = asyncSignal(S, fetchProducts, { initial: [], keepLast: true });
const searchTerm = S("");
const handleSearch = (e) => searchTerm.set(e.target.value);
const sortOrder = S("default");
const handleSort = (e) => sortOrder.set(e.target.value);
const page = S(1);
const handlePageChange = (newPage) => page.set(newPage);
const resetFilters = () => {
searchTerm.set("");
sortOrder.set("default");
page.set(1);
};
const filteredProducts = S(() => {
if (products.status.get() !== "resolved") return [];
const results = products.result.get().filter(product =>
product.title.toLowerCase().includes(searchTerm.get().toLowerCase()) ||
product.description.toLowerCase().includes(searchTerm.get().toLowerCase())
);
return [...results].sort((a, b) => {
const order = sortOrder.get();
if (order === "price-asc") return a.price - b.price;
if (order === "price-desc") return b.price - a.price;
if (order === "rating") return b.rating - a.rating;
return 0; // default: no sorting
});
});
const totalPages = S(() => Math.ceil(filteredProducts.get().length / itemsPerPage));
const paginatedProducts = S(() => {
const currentPage = page.get();
const filtered = filteredProducts.get();
const start = (currentPage - 1) * itemsPerPage;
return filtered.slice(start, start + itemsPerPage);
});
// Component structure
return el("div", { className: "product-catalog" }).append(
el("header", { className: "catalog-header" }).append(
el("h2", "Product Catalog"),
el("div", { className: "toolbar" }).append(
el("button", {
className: "refresh-btn",
textContent: "Refresh Products",
type: "button",
onclick: () => products.invoke(),
}),
el("button", {
className: "reset-btn",
textContent: "Reset Filters",
type: "button",
onclick: resetFilters,
})
)
),
// Search and filter controls
el("div", { className: "controls" }).append(
el("div", { className: "search-box" }).append(
el("input", {
type: "search",
placeholder: "Search products...",
value: searchTerm,
oninput: handleSearch,
})
),
el("div", { className: "sort-options" }).append(
el("label", "Sort by: "),
el("select", { onchange: handleSort }, on.defer(el => el.value = sortOrder.get())).append(
el("option", { value: "default", textContent: "Default" }),
el("option", { value: "price-asc", textContent: "Price: Low to High" }),
el("option", { value: "price-desc", textContent: "Price: High to Low" }),
el("option", { value: "rating", textContent: "Top Rated" })
)
)
),
// Status indicators
el("div", { className: "status-container" }).append(
S.el(products.status, status =>
status === "pending" ?
el("div", { className: "loader" }).append(
el("div", { className: "spinner" }),
el("p", "Loading products...")
)
: status === "rejected" ?
el("div", { className: "error-message" }).append(
el("p", products.error.get().message),
el("button", {
textContent: "Try Again",
onclick: () => products.invoke()
})
)
: el()
)
),
// Results count
S.el(S(()=> [filteredProducts.get(), searchTerm.get()]), ([filtered, term]) =>
products.status.get() === "resolved"
? el("div", {
className: "results-info",
textContent: term ?
`Found ${filtered.length} products matching "${term}"`
: `Showing all ${filtered.length} products`
})
: el()
),
// Products grid
el("div", { className: "products-grid" }).append(
S.el(paginatedProducts, paginatedItems =>
products.status.get() === "resolved" && paginatedItems.length > 0 ?
paginatedItems.map(product => el(ProductCard, { product }))
: products.status.get() === "resolved" && paginatedItems.length === 0 ?
el("p", { className: "no-results", textContent: "No products found matching your criteria." })
: el()
)
),
// Pagination
S.el(S(()=> [totalPages.get(), page.get()]), ([total, current]) =>
products.status.get() === "resolved" && total > 1 ?
el("div", { className: "pagination" }).append(
el("button", {
textContent: "Previous",
disabled: current === 1,
onclick: () => handlePageChange(current - 1)
}),
...Array.from({ length: total }, (_, i) => i + 1).map(num =>
el("button", {
className: num === current ? "current-page" : "",
textContent: num,
onclick: () => handlePageChange(num)
})
),
el("button", {
textContent: "Next",
disabled: current === total,
onclick: () => handlePageChange(current + 1)
})
)
: el()
)
);
}
// Product card component
function ProductCard({ product }) {
const showDetails = S(false);
return el("div", { className: "product-card" }).append(
el("div", { className: "product-image" }).append(
el("img", { src: product.thumbnail, alt: product.title })
),
el("div", { className: "product-info" }).append(
el("h3", { className: "product-title", textContent: product.title }),
el("div", { className: "product-price-rating" }).append(
el("span", { className: "product-price", textContent: `$${product.price.toFixed(2)}` }),
el("span", { className: "product-rating" }).append(
el("span", { className: "stars", textContent: "★".repeat(Math.round(product.rating)) }),
el("span", { className: "rating-value", textContent: `(${product.rating})` }),
)
),
el("p", { className: "product-category", textContent: `Category: ${product.category}` }),
S.el(showDetails, details =>
details ?
el("div", { className: "product-details" }).append(
el("p", { className: "product-description", textContent: product.description }),
el("div", { className: "product-meta" }).append(
el("p", `Brand: ${product.brand}`),
el("p", `Stock: ${product.stock} units`),
el("p", `Discount: ${product.discountPercentage}%`)
)
)
: el()
),
el("div", { className: "product-actions" }).append(
el("button", {
className: "details-btn",
textContent: S(() => showDetails.get() ? "Hide Details" : "Show Details"),
onclick: () => showDetails.set(!showDetails.get())
}),
el("button", {
className: "add-to-cart-btn",
textContent: "Add to Cart"
})
)
)
);
}
// Data fetching function
async function fetchProducts({ signal }) {
await simulateNetworkDelay();
// Simulate random errors for demonstration
if (Math.random() > 0.9) throw new Error("Failed to load products. Network error.");
const response = await fetch("https://dummyjson.com/products", { signal });
if (!response.ok) throw new Error(`API error: ${response.status}`);
const data = await response.json();
return data.products.slice(0, 20); // Limit to 20 products for the demo
}
// Utility for simulating network latency
function simulateNetworkDelay(min = 300, max = 1200) {
const delay = Math.floor(Math.random() * (max - min + 1)) + min;
return new Promise(resolve => setTimeout(resolve, delay));
}
/**
* Custom hook for async data fetching with signals
* @template T
* @param {typeof S} S - Signal constructor
* @param {(params: { signal: AbortSignal }) => Promise<T>} invoker - Async function to execute
* @param {{ initial?: T, keepLast?: boolean }} options - Configuration options
* @returns {Object} Status signals and control methods
*/
export function asyncSignal(S, invoker, { initial, keepLast } = {}) {
// Status tracking signals
const status = S("pending");
const result = S(initial);
const error = S(null);
let controller = null;
// Function to trigger data fetching
async function invoke() {
// Cancel any in-flight request
if (controller) controller.abort();
controller = new AbortController();
status.set("pending");
error.set(null);
if (!keepLast) result.set(initial);
try {
const data = await invoker({
signal: controller.signal,
});
if (!controller.signal.aborted) {
status.set("resolved");
result.set(data);
}
} catch (e) {
if (e.name !== "AbortError") {
error.set(e);
status.set("rejected");
}
}
}
// Initial data fetch
invoke();
return { status, result, error, invoke };
}
// Initialize the component
document.body.append(
el(ProductCatalog),
el("style", `
.product-catalog {
font-family: system-ui, -apple-system, sans-serif;
max-width: 1200px;
margin: 0 auto;
padding: 20px;
}
.catalog-header {
display: flex;
justify-content: space-between;
align-items: center;
margin-bottom: 20px;
}
.toolbar button {
margin-left: 10px;
padding: 8px 12px;
border-radius: 4px;
border: none;
background: #4a6cf7;
color: white;
cursor: pointer;
}
.controls {
display: flex;
justify-content: space-between;
margin-bottom: 20px;
gap: 15px;
flex-wrap: wrap;
}
.search-box input {
padding: 8px 12px;
border: 1px solid #ddd;
border-radius: 4px;
width: 300px;
max-width: 100%;
}
.sort-options select {
padding: 8px 12px;
border: 1px solid #ddd;
border-radius: 4px;
}
.loader {
text-align: center;
padding: 40px 0;
}
.spinner {
display: inline-block;
width: 40px;
height: 40px;
border: 4px solid rgba(0, 0, 0, 0.1);
border-left-color: #4a6cf7;
border-radius: 50%;
animation: spin 1s linear infinite;
}
@keyframes spin {
to { transform: rotate(360deg); }
}
.error-message {
background: #ffebee;
color: #c62828;
padding: 15px;
border-radius: 4px;
margin: 20px 0;
text-align: center;
}
.results-info {
margin-bottom: 15px;
color: #666;
}
.products-grid {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
gap: 20px;
margin-bottom: 30px;
}
.product-card {
border: 1px solid #eee;
border-radius: 8px;
overflow: hidden;
transition: transform 0.2s, box-shadow 0.2s;
}
.product-card:hover {
transform: translateY(-5px);
box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}
.product-image img {
width: 100%;
height: 180px;
object-fit: cover;
display: block;
}
.product-info {
padding: 15px;
}
.product-title {
margin: 0 0 10px;
font-size: 1.1rem;
height: 2.4rem;
overflow: hidden;
display: -webkit-box;
-webkit-line-clamp: 2;
-webkit-box-orient: vertical;
}
.product-price-rating {
display: flex;
justify-content: space-between;
margin-bottom: 10px;
}
.product-price {
font-weight: bold;
color: #4a6cf7;
font-size: 1.2rem;
}
.stars {
color: gold;
margin-right: 5px;
}
.product-category {
color: #666;
font-size: 0.9rem;
margin-bottom: 15px;
}
.product-details {
margin: 15px 0;
font-size: 0.9rem;
}
.product-description {
line-height: 1.5;
margin-bottom: 10px;
color: #444;
}
.product-meta {
display: flex;
flex-wrap: wrap;
gap: 10px;
color: #666;
font-size: 0.85rem;
}
.product-actions {
display: flex;
gap: 10px;
margin-top: 15px;
}
.product-actions button {
flex: 1;
padding: 8px 0;
border: none;
border-radius: 4px;
cursor: pointer;
}
.details-btn {
background: #eee;
color: #333;
}
.add-to-cart-btn {
background: #4a6cf7;
color: white;
}
.pagination {
display: flex;
justify-content: center;
gap: 5px;
margin-top: 30px;
}
.pagination button {
padding: 8px 12px;
border: 1px solid #ddd;
background: white;
border-radius: 4px;
cursor: pointer;
}
.pagination button.current-page {
background: #4a6cf7;
color: white;
border-color: #4a6cf7;
}
.pagination button:disabled {
opacity: 0.5;
cursor: not-allowed;
}
.no-results {
grid-column: 1 / -1;
text-align: center;
padding: 40px;
color: #666;
}
@media (max-width: 768px) {
.controls {
flex-direction: column;
}
.search-box input {
width: 100%;
}
.products-grid {
grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}
}
`),
);

2
docs/components/examples/case-studies/task-manager.js
View File

@ -483,7 +483,7 @@ document.body.append(
.task-board {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
gap: 1.5rem;
}

4
docs/components/examples/elements/dde-dom-create.js
View File

@ -4,11 +4,11 @@ import { el } from "deka-dom-el";
const button = el("button", {
textContent: "Click me",
className: "primary",
disabled: true
disabled: true,
});
// Shorter and more expressive
// than the native approach
// Add to DOM
document.body.append(button);
document.body.append(button);

4
docs/components/examples/elements/dde-dom-tree.js
View File

@ -6,6 +6,6 @@ import { el } from "deka-dom-el";
document.body.append(
el("div").append(
el("h1", "Title"),
el("p", "Paragraph")
)
el("p", "Paragraph"),
),
);

13
docs/components/examples/reallife/todomvc.js
View File

@ -81,11 +81,11 @@ function Todos(){
)
)
),
S.el(todosS, todos => !todos.length
S.el(todosS, ({ length }) => !length
? el()
: el("footer", { className: "footer" }).append(
el("span", { className: "todo-count" }).append(
noOfLeft()
el("strong", length + " " + (length === 1 ? "item" : "items")),
),
memo("filters", ()=>
el("ul", { className: "filters" }).append(
@ -100,7 +100,7 @@ function Todos(){
)
),
),
todos.length - todosRemainingS.get() === 0
length - todosRemainingS.get() === 0
? el()
: memo("delete", () =>
el("button",
@ -110,13 +110,6 @@ function Todos(){
)
)
);
function noOfLeft(){
const length = todosRemainingS.get();
return el("strong").append(
length + " ",
length === 1 ? "item left" : "items left"
)
}
}
/**

4
docs/components/getLibraryUrl.html.js
View File

@ -1,4 +1,4 @@
import { styles } from "../ssr.js";
import { styles, page_id } from "../ssr.js";
styles.css`
#library-url-form {
@ -74,7 +74,7 @@ styles.css`
import { el } from "deka-dom-el";
import { ireland } from "./ireland.html.js";
export function getLibraryUrl({ page_id }){
export function getLibraryUrl(){
return el(ireland, {
src: new URL("./getLibraryUrl.js.js", import.meta.url),
exportName: "getLibraryUrl",

1
docs/components/ireland.html.js
View File

@ -43,7 +43,6 @@ const componentsRegistry = new Map();
* @param {object} attrs
* @param {URL} attrs.src - Path to the file containing the component
* @param {string} [attrs.exportName="default"] - Name of the export to use
* @param {string} attrs.page_id - ID of the current page
* @param {object} [attrs.props={}] - Props to pass to the component
*/
export function ireland({ src, exportName = "default", props = {} }) {

4
docs/components/mnemonic/events-init.js
View File

@ -12,6 +12,10 @@ export function mnemonic(){
" — corresponds to custom elemnets callbacks ", el("code", "<live-cycle>Callback(...){...}"),
". To connect to custom element see following page, else it is simulated by MutationObserver."
),
el("li").append(
el("code", "on.defer(<identity>=> <identity>)(<identity>)"),
" — calls callback later",
),
el("li").append(
el("code", "dispatchEvent(<event>[, <options>])(element)"),
" — just ", el("code", "<element>.dispatchEvent(new Event(<event>[, <options>]))")

39
docs/index.html.js
View File

@ -3,8 +3,8 @@ import { t, T } from "./utils/index.js";
export const info= {
href: "./",
title: t`Introduction`,
fullTitle: t`Vanilla for flavouring — a full-fledged feast for large projects`,
description: t`A lightweight, reactive DOM library for creating dynamic UIs with a declarative syntax`,
fullTitle: t`Vanilla for flavouring — a full-fledged feast for large projects`,
description: t`Reactive DOM library for creating dynamic UIs with a declarative syntax`,
};
import { el } from "deka-dom-el";
@ -16,7 +16,11 @@ import { getLibraryUrl } from "./components/getLibraryUrl.html.js";
/** @param {string} url */
const fileURL= url=> new URL(url, import.meta.url);
const references= {
w_mvv:{
npm: {
title: t`NPM package page for dd<el>`,
href: "https://www.npmjs.com/package/deka-dom-el",
},
w_mvv: {
title: t`Wikipedia: Model–view–viewmodel`,
href: "https://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93viewmodel",
},
@ -27,10 +31,9 @@ const references= {
};
/** @param {import("./types.d.ts").PageAttrs} attrs */
export function page({ pkg, info }){
const page_id= info.id;
return el(simplePage, { info, pkg }).append(
el("p").append(T`
Welcome to Deka DOM Elements (dd<el> or DDE) — a lightweight library for building dynamic UIs with
Welcome to Deka DOM Elements (dd<el> or DDE) — a library for building dynamic UIs with
a declarative syntax that stays close to the native DOM API. dd<el> gives you powerful reactive tools
without the complexity and overhead of larger frameworks.
`),
@ -40,11 +43,11 @@ export function page({ pkg, info }){
el("li", t`No build step required — use directly in the browser`),
el("li", t`Lightweight core (~10–15kB minified) without unnecessary dependencies (0 at now 😇)`),
el("li", t`Natural DOM API — work with real DOM nodes, not abstractions`),
el("li", t`Built-in reactivity with simplified but powerful signals system`),
el("li", t`Built-in (but optional) reactivity with simplified but powerful signals system`),
el("li", t`Clean code organization with the 3PS pattern`)
)
),
el(example, { src: fileURL("./components/examples/introducing/helloWorld.js"), page_id }),
el(example, { src: fileURL("./components/examples/introducing/helloWorld.js") }),
el(h3, { textContent: t`The 3PS Pattern: Simplified architecture pattern`, id: "h-3ps" }),
el("p").append(T`
@ -56,11 +59,11 @@ export function page({ pkg, info }){
el("div", { className: "tabs" }).append(
el("div", { className: "tab" }).append(
el("h5", t`Traditional DOM Manipulation`),
el(code, { src: fileURL("./components/examples/introducing/3ps-before.js"), page_id }),
el(code, { src: fileURL("./components/examples/introducing/3ps-before.js") }),
),
el("div", { className: "tab" }).append(
el("h5", t`dd<el>'s 3PS Pattern`),
el(code, { src: fileURL("./components/examples/introducing/3ps.js"), page_id }),
el(code, { src: fileURL("./components/examples/introducing/3ps.js") }),
)
)
),
@ -101,16 +104,20 @@ export function page({ pkg, info }){
el(h3, t`Getting Started`),
el("p").append(T`
There are multiple ways to include dd<el> in your project. You can use npm for a full development setup,
or directly include it from a CDN for quick prototyping.
There are multiple ways to include dd<el> in your project. You can use npm for a full development setup,
or directly include it from a CDN for quick prototyping.
`),
el("h4", "npm installation"),
el(code, { content: "npm install deka-dom-el --save", language: "shell", page_id }),
el(code, { content: "npm install deka-dom-el --save", language: "shell" }),
el("p").append(T`
…see ${el("a", { textContent: "package page", ...references.npm, target: "_blank" })}.
`),
el("h4", "CDN / Direct Script Usage"),
el("p").append(T`
Use the interactive selector below to choose your preferred format:
`),
el(getLibraryUrl, { page_id }),
el(getLibraryUrl),
el("div", { className: "note" }).append(
el("p").append(T`
Based on your selection, you can use dd<el> in your project like this:
@ -119,10 +126,10 @@ export function page({ pkg, info }){
// ESM format (modern JavaScript with import/export)
import { el, on } from "https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.min.js";
// Or with IIFE format (creates a global DDE object)
// Or with IIFE format (creates a global DDE object)
// <script src="https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/iife-with-signals.min.js"></script>
const { el, on } = DDE;
`, language: "js", page_id }),
`, language: "js" }),
),
el(h3, t`How to Use This Documentation`),
@ -146,7 +153,7 @@ export function page({ pkg, info }){
Integrating third-party functionalities`),
el("li").append(T`${el("a", { href: "p09-optimization.html" })
.append(el("strong", "Performance Optimization"))} — Techniques for optimizing your applications`),
el("li").append(T`${el("a", { href: "p10-todomvc.html" }).append(el("strong", "TodoMVC"))} — A real-world
el("li").append(T`${el("a", { href: "p10-todomvc.html" }).append(el("strong", "TodoMVC"))} — A real-world
application implementation`),
el("li").append(T`${el("a", { href: "p11-ssr.html" }).append(el("strong", "SSR"))} — Server-side
rendering with dd<el>`),

27
docs/p02-elements.html.js
View File

@ -47,12 +47,11 @@ const references= {
};
/** @param {import("./types.d.ts").PageAttrs} attrs */
export function page({ pkg, info }){
const page_id= info.id;
return el(simplePage, { info, pkg }).append(
el("p").append(T`
Building user interfaces in JavaScript often involves creating and manipulating DOM elements.
dd<el> provides a simple yet powerful approach to element creation that is declarative, chainable,
and maintains a clean syntax close to HTML structure.
dd<el> provides a simple yet powerful approach to element creation that is declarative, chainable,
and maintains a clean syntax close to HTML structure.
`),
el("div", { className: "callout" }).append(
el("h4", t`dd<el> Elements: Key Benefits`),
@ -65,7 +64,7 @@ export function page({ pkg, info }){
)
),
el(code, { src: fileURL("./components/examples/elements/intro.js"), page_id }),
el(code, { src: fileURL("./components/examples/elements/intro.js") }),
el(h3, t`Creating Elements: Native vs dd<el>`),
el("p").append(T`
@ -77,11 +76,11 @@ export function page({ pkg, info }){
el("div", { className: "comparison" }).append(
el("div").append(
el("h5", t`Native DOM API`),
el(code, { src: fileURL("./components/examples/elements/native-dom-create.js"), page_id })
el(code, { src: fileURL("./components/examples/elements/native-dom-create.js") })
),
el("div").append(
el("h5", t`dd<el> Approach`),
el(code, { src: fileURL("./components/examples/elements/dde-dom-create.js"), page_id })
el(code, { src: fileURL("./components/examples/elements/dde-dom-create.js") })
)
)
),
@ -89,7 +88,7 @@ export function page({ pkg, info }){
The ${el("code", "el")} function provides a simple wrapper around ${el("code", "document.createElement")}
with enhanced property assignment.
`),
el(example, { src: fileURL("./components/examples/elements/dekaCreateElement.js"), page_id }),
el(example, { src: fileURL("./components/examples/elements/dekaCreateElement.js") }),
el(h3, t`Advanced Property Assignment`),
el("p").append(T`
@ -122,7 +121,7 @@ export function page({ pkg, info }){
el("dd").append(T`Pass ${el("code", "undefined")} to remove a property or attribute`)
)
),
el(example, { src: fileURL("./components/examples/elements/dekaAssign.js"), page_id }),
el(example, { src: fileURL("./components/examples/elements/dekaAssign.js") }),
el("div", { className: "note" }).append(
el("p").append(T`
@ -142,11 +141,11 @@ export function page({ pkg, info }){
el("div", { className: "comparison" }).append(
el("div", { className: "bad-practice" }).append(
el("h5", t`❌ Native DOM API`),
el(code, { src: fileURL("./components/examples/elements/native-dom-tree.js"), page_id })
el(code, { src: fileURL("./components/examples/elements/native-dom-tree.js") })
),
el("div", { className: "good-practice" }).append(
el("h5", t`✅ dd<el> Approach`),
el(code, { src: fileURL("./components/examples/elements/dde-dom-tree.js"), page_id })
el(code, { src: fileURL("./components/examples/elements/dde-dom-tree.js") })
)
)
),
@ -154,14 +153,14 @@ export function page({ pkg, info }){
This chainable pattern is much cleaner and easier to follow, especially for deeply nested elements.
It also makes it simple to add multiple children to a parent element in a single fluent expression.
`),
el(example, { src: fileURL("./components/examples/elements/dekaAppend.js"), page_id }),
el(example, { src: fileURL("./components/examples/elements/dekaAppend.js") }),
el(h3, t`Using Components to Build UI Fragments`),
el("p").append(T`
The ${el("code", "el")} function is overloaded to support both tag names and function components.
This lets you refactor complex UI trees into reusable pieces:
`),
el(example, { src: fileURL("./components/examples/elements/dekaBasicComponent.js"), page_id }),
el(example, { src: fileURL("./components/examples/elements/dekaBasicComponent.js") }),
el("p").append(T`
Component functions receive the properties object as their first argument, just like regular elements.
This makes it easy to pass data down to components and create reusable UI fragments.
@ -185,9 +184,9 @@ export function page({ pkg, info }){
function which corresponds to the native ${el("a", references.mdn_ns).append(el("code",
"document.createElementNS"))}:
`),
el(example, { src: fileURL("./components/examples/elements/dekaElNS.js"), page_id }),
el(example, { src: fileURL("./components/examples/elements/dekaElNS.js") }),
el("p").append(T`
This function returns a namespace-specific element creator, allowing you to work with any element type
This function returns a namespace-specific element creator, allowing you to work with any element type
using the same consistent interface.
`),

31
docs/p03-events.html.js
View File

@ -39,7 +39,6 @@ const references= {
};
/** @param {import("./types.d.ts").PageAttrs} attrs */
export function page({ pkg, info }){
const page_id= info.id;
return el(simplePage, { info, pkg }).append(
el("p").append(T`
Events are at the core of interactive web applications. dd<el> provides a clean, declarative approach to
@ -57,7 +56,7 @@ export function page({ pkg, info }){
)
),
el(code, { src: fileURL("./components/examples/events/intro.js"), page_id }),
el(code, { src: fileURL("./components/examples/events/intro.js") }),
el(h3, t`Events and Listeners: Two Approaches`),
el("p").append(T`
@ -70,11 +69,11 @@ export function page({ pkg, info }){
el("div", { className: "tabs" }).append(
el("div", { className: "tab" }).append(
el("h5", t`Native DOM API`),
el(code, { content: `element.addEventListener("click", callback, options);`, page_id })
el(code, { content: `element.addEventListener("click", callback, options);`, language: "js" })
),
el("div", { className: "tab" }).append(
el("h5", t`dd<el> Approach`),
el(code, { content: `on("click", callback, options)(element);`, page_id })
el(code, { content: `on("click", callback, options)(element);`, language: "js" })
)
)
),
@ -82,7 +81,7 @@ export function page({ pkg, info }){
The main benefit of dd<el>’s approach is that it works as an Addon (see below), making it easy to integrate
directly into element declarations.
`),
el(example, { src: fileURL("./components/examples/events/compare.js"), page_id }),
el(example, { src: fileURL("./components/examples/events/compare.js") }),
el(h3, t`Removing Event Listeners`),
el("div", { className: "note" }).append(
@ -91,7 +90,7 @@ export function page({ pkg, info }){
${el("a", { textContent: "AbortSignal", ...references.mdn_abortListener })} for declarative removal:
`)
),
el(example, { src: fileURL("./components/examples/events/abortSignal.js"), page_id }),
el(example, { src: fileURL("./components/examples/events/abortSignal.js") }),
el("p").append(T`
This is the same for signals (see next section) and works well with scopes and library extendability (
see scopes and extensions section — mainly ${el("code", "scope.signal")}).
@ -101,26 +100,26 @@ export function page({ pkg, info }){
el("div", { className: "tabs" }).append(
el("div", { className: "tab", dataTab: "html-attr" }).append(
el("h4", t`HTML Attribute Style`),
el(code, { src: fileURL("./components/examples/events/attribute-event.js"), page_id }),
el(code, { src: fileURL("./components/examples/events/attribute-event.js") }),
el("p").append(T`
Forces usage as an HTML attribute. Corresponds to
Forces usage as an HTML attribute. Corresponds to
${el("code", `<button onclick="console.log(event)">click me</button>`)}. This can be particularly
useful for SSR scenarios.
`)
),
el("div", { className: "tab", dataTab: "property" }).append(
el("h4", t`Property Assignment`),
el(code, { src: fileURL("./components/examples/events/property-event.js"), page_id }),
el(code, { src: fileURL("./components/examples/events/property-event.js") }),
el("p", t`Assigns the event handler directly to the element’s property.`)
),
el("div", { className: "tab", dataTab: "addon" }).append(
el("h4", t`Addon Approach`),
el(code, { src: fileURL("./components/examples/events/chain-event.js"), page_id }),
el(code, { src: fileURL("./components/examples/events/chain-event.js") }),
el("p", t`Uses the addon pattern (so adds the event listener to the element), see above.`)
)
),
el("p").append(T`
For a deeper comparison of these approaches, see
For a deeper comparison of these approaches, see
${el("a", { textContent: "WebReflection’s detailed analysis", ...references.web_events })}.
`),
@ -143,7 +142,7 @@ export function page({ pkg, info }){
You can use Addons as ≥3rd argument of the ${el("code", "el")} function, making it possible to
extend your templates with additional functionality:
`),
el(example, { src: fileURL("./components/examples/events/templateWithListeners.js"), page_id }),
el(example, { src: fileURL("./components/examples/events/templateWithListeners.js") }),
el("p").append(T`
As the example shows, you can provide types in JSDoc+TypeScript using the global type
${el("code", "ddeElementAddon")}. Notice how Addons can also be used to get element references.
@ -167,7 +166,7 @@ export function page({ pkg, info }){
el("dd", t`Fires when the element is removed from the DOM`),
)
),
el(example, { src: fileURL("./components/examples/events/live-cycle.js"), page_id }),
el(example, { src: fileURL("./components/examples/events/live-cycle.js") }),
el("div", { className: "note" }).append(
el("p").append(T`
@ -217,8 +216,8 @@ export function page({ pkg, info }){
This makes it easy to implement component communication through events, following standard web platform
patterns. The curried approach allows for easy reuse of event dispatchers throughout your application.
`),
el(example, { src: fileURL("./components/examples/events/compareDispatch.js"), page_id }),
el(code, { src: fileURL("./components/examples/events/dispatch.js"), page_id }),
el(example, { src: fileURL("./components/examples/events/compareDispatch.js") }),
el(code, { src: fileURL("./components/examples/events/dispatch.js") }),
el(h3, t`Best Practices`),
el("ol").append(
@ -251,6 +250,6 @@ export function page({ pkg, info }){
)
),
el(mnemonic)
el(mnemonic),
);
}

43
docs/p04-signals.html.js
View File

@ -42,7 +42,6 @@ const references= {
};
/** @param {import("./types.d.ts").PageAttrs} attrs */
export function page({ pkg, info }){
const page_id= info.id;
return el(simplePage, { info, pkg }).append(
el("p").append(T`
Signals provide a simple yet powerful way to create reactive applications with dd<el>. They handle the
@ -58,7 +57,7 @@ export function page({ pkg, info }){
el("li").append(T`${el("strong", "In future")} no dependencies or framework lock-in`)
)
),
el(code, { src: fileURL("./components/examples/signals/intro.js"), page_id }),
el(code, { src: fileURL("./components/examples/signals/intro.js") }),
el(h3, t`The 3-Part Structure of Signals`),
el("p").append(T`
@ -68,21 +67,21 @@ export function page({ pkg, info }){
el("div", { className: "signal-diagram" }).append(
el("div", { className: "signal-part" }).append(
el("h4", t`PART 1: Create Signal`),
el(code, { content: "const count = S(0);", page_id }),
el(code, { content: "const count = S(0);", language: "js" }),
el("p", t`Define a reactive value that can be observed and changed`)
),
el("div", { className: "signal-part" }).append(
el("h4", t`PART 2: React to Changes`),
el(code, { content: "S.on(count, value => updateUI(value));", page_id }),
el(code, { content: "S.on(count, value => updateUI(value));", language: "js" }),
el("p", t`Subscribe to signal changes with callbacks or effects`)
),
el("div", { className: "signal-part" }).append(
el("h4", t`PART 3: Update Signal`),
el(code, { content: "count.set(count.get() + 1);", page_id }),
el(code, { content: "count.set(count.get() + 1);", language: "js" }),
el("p", t`Modify the signal value, which automatically triggers updates`)
)
),
el(example, { src: fileURL("./components/examples/signals/signals.js"), page_id }),
el(example, { src: fileURL("./components/examples/signals/signals.js") }),
el("div", { className: "note" }).append(
el("p").append(T`
@ -125,12 +124,12 @@ export function page({ pkg, info }){
Computed values (also called derived signals) automatically update when their dependencies change.
Create them by passing ${el("strong", "a function")} to ${el("code", "S()")}:
`),
el(example, { src: fileURL("./components/examples/signals/derived.js"), page_id }),
el(example, { src: fileURL("./components/examples/signals/derived.js") }),
el("p").append(T`
Derived signals are read-only - you can’t call ${el("code", ".set()")} on them. Their value is always
computed from their dependencies. They’re perfect for transforming or combining data from other signals.
`),
el(example, { src: fileURL("./components/examples/signals/computations-abort.js"), page_id }),
el(example, { src: fileURL("./components/examples/signals/computations-abort.js") }),
el(h3, t`Signal Actions: For Complex State`),
el("p").append(T`
@ -151,7 +150,7 @@ export function page({ pkg, info }){
});
// Use the action
S.action(todos, "add", "New todo");
`, page_id })
`, language: "js" })
),
el("div", { className: "bad-practice" }).append(
el("h5", t`❌ Without Actions`),
@ -161,7 +160,7 @@ export function page({ pkg, info }){
const items = todos.get();
items.push("New todo");
// This WON’T trigger updates!
`, page_id }))
`, language: "js" }))
),
),
el("p").append(T`
@ -172,7 +171,7 @@ export function page({ pkg, info }){
${el("code", "this.stopPropagation()")} in the method representing the given action. As it can be seen in
examples, the “store” value is available also in the function for given action (${el("code", "this.value")}).
`),
el(example, { src: fileURL("./components/examples/signals/actions-demo.js"), page_id }),
el(example, { src: fileURL("./components/examples/signals/actions-demo.js") }),
el("p").append(T`
Actions provide these benefits:
@ -186,7 +185,7 @@ export function page({ pkg, info }){
el("p").append(T`
Here’s a more complete example of a todo list using signal actions:
`),
el(example, { src: fileURL("./components/examples/signals/actions-todos.js"), page_id }),
el(example, { src: fileURL("./components/examples/signals/actions-todos.js") }),
el("div", { className: "tip" }).append(
el("p").append(T`
@ -223,7 +222,7 @@ export function page({ pkg, info }){
// Later:
color.set("red"); // UI updates automatically
`, page_id }),
`, language: "js" }),
),
el("div", { className: "tab", dataTab: "elements" }).append(
el("h4", t`Reactive Elements`),
@ -241,7 +240,7 @@ export function page({ pkg, info }){
// Later:
S.action(items, "push", "Dragonfruit"); // List updates automatically
`, page_id }),
`, language: "js" }),
)
),
@ -250,12 +249,12 @@ export function page({ pkg, info }){
You can use special properties like ${el("code", "dataset")}, ${el("code", "ariaset")}, and
${el("code", "classList")} for fine-grained control over specific attribute types.
`),
el(example, { src: fileURL("./components/examples/signals/dom-attrs.js"), page_id }),
el(example, { src: fileURL("./components/examples/signals/dom-attrs.js") }),
el("p").append(T`
${el("code", "S.el()")} is especially powerful for conditional rendering and lists:
`),
el(example, { src: fileURL("./components/examples/signals/dom-el.js"), page_id }),
el(example, { src: fileURL("./components/examples/signals/dom-el.js") }),
el(h3, t`Best Practices for Signals`),
el("p").append(T`
@ -289,7 +288,7 @@ export function page({ pkg, info }){
el("h4", t`We can process form events without signals`),
el("p", t`This can be used when the form data doesn’t need to be reactive and we just waiting for
results.`),
el(code, { page_id, content: `
el(code, { content: `
const onFormSubmit = on("submit", e => {
e.preventDefault();
const formData = new FormData(e.currentTarget);
@ -301,13 +300,13 @@ export function page({ pkg, info }){
return el("form", null, onFormSubmit).append(
// …
);
` })
`, language: "js" })
),
el("div", { className: "tab", dataTab: "variables" }).append(
el("h4", t`We can use variables without signals`),
el("p", t`We use this when we dont’t need to reflect changes in the elsewhere (UI).`),
el(code, { page_id, content: `
el(code, { content: `
let canSubmit = false;
const onFormSubmit = on("submit", e => {
@ -318,14 +317,14 @@ export function page({ pkg, info }){
const onAllowSubmit = on("click", e => {
canSubmit = true;
});
`}),
`, language: "js" }),
),
el("div", { className: "tab", dataTab: "state" }).append(
el("h4", t`Using signals`),
el("p", t`We use this when we need to reflect changes for example in the UI (e.g. enable/disable
buttons).`),
el(code, { page_id, content: `
el(code, { content: `
const canSubmit = S(false);
const onFormSubmit = on("submit", e => {
@ -341,7 +340,7 @@ export function page({ pkg, info }){
el("button", { textContent: "Allow Submit", type: "button" }, onAllowSubmit),
el("button", { disabled: S(()=> !canSubmit), textContent: "Submit" })
);
`}),
`, language: "js" }),
),
),

17
docs/p05-scopes.html.js
View File

@ -27,14 +27,13 @@ const references= {
};
/** @param {import("./types.d.ts").PageAttrs} attrs */
export function page({ pkg, info }){
const page_id= info.id;
return el(simplePage, { info, pkg }).append(
el("p").append(T`
For state-less components we can use functions as UI components (see “Elements” page). But in real life,
we may need to handle the component’s life-cycle and provide JavaScript the way to properly use
the ${el("a", { textContent: t`Garbage collection`, ...references.garbage_collection })}.
`),
el(code, { src: fileURL("./components/examples/scopes/intro.js"), page_id }),
el(code, { src: fileURL("./components/examples/scopes/intro.js") }),
el("p").append(T`The library therefore uses ${el("em", t`scopes`)} to provide these functionalities.`),
el(h3, t`Understanding Host Elements and Scopes`),
@ -83,7 +82,7 @@ export function page({ pkg, info }){
el("dd", t`Applies the addons to the host element (and returns the host element)`)
)
),
el(example, { src: fileURL("./components/examples/scopes/scopes-and-hosts.js"), page_id }),
el(example, { src: fileURL("./components/examples/scopes/scopes-and-hosts.js") }),
el("div", { className: "tip" }).append(
el("p").append(T`
@ -95,7 +94,7 @@ export function page({ pkg, info }){
If you are interested in the implementation details, see Class-Based Components section.
`)
),
el(code, { src: fileURL("./components/examples/scopes/good-practise.js"), page_id }),
el(code, { src: fileURL("./components/examples/scopes/good-practise.js") }),
el(h3, t`Class-Based Components`),
el("p").append(T`
@ -103,7 +102,7 @@ export function page({ pkg, info }){
For this, we implement function ${el("code", "elClass")} and use it to demonstrate implementation details
for better understanding of the scope logic.
`),
el(example, { src: fileURL("./components/examples/scopes/class-component.js"), page_id }),
el(example, { src: fileURL("./components/examples/scopes/class-component.js") }),
el(h3, t`Automatic Cleanup with Scopes`),
el("p").append(T`
@ -123,7 +122,7 @@ export function page({ pkg, info }){
- Custom cleanup code (dd<el> and user)
` })
),
el(example, { src: fileURL("./components/examples/scopes/cleaning.js"), page_id }),
el(example, { src: fileURL("./components/examples/scopes/cleaning.js") }),
el("div", { className: "note" }).append(
el("p").append(T`
@ -149,17 +148,17 @@ export function page({ pkg, info }){
el("div", { className: "tab", dataTab: "declarative" }).append(
el("h4", t`✅ Declarative Approach`),
el("p", t`Define what your UI should look like based on state:`),
el(code, { src: fileURL("./components/examples/scopes/declarative.js"), page_id })
el(code, { src: fileURL("./components/examples/scopes/declarative.js") })
),
el("div", { className: "tab", dataTab: "imperative" }).append(
el("h4", t`⚠️ Imperative Approach`),
el("p", t`Manually update the DOM in response to events:`),
el(code, { src: fileURL("./components/examples/scopes/imperative.js"), page_id })
el(code, { src: fileURL("./components/examples/scopes/imperative.js") })
),
el("div", { className: "tab", dataTab: "mixed" }).append(
el("h4", t`❌ Mixed Approach`),
el("p", t`This approach should be avoided:`),
el(code, { src: fileURL("./components/examples/scopes/mixed.js"), page_id })
el(code, { src: fileURL("./components/examples/scopes/mixed.js") })
)
),

15
docs/p06-customElement.html.js
View File

@ -57,7 +57,6 @@ const references= {
};
/** @param {import("./types.d.ts").PageAttrs} attrs */
export function page({ pkg, info }){
const page_id= info.id;
return el(simplePage, { info, pkg }).append(
el("p").append(T`
dd<el> pairs powerfully with ${el("a", references.mdn_web_components).append(el("strong", t`Web
@ -73,7 +72,7 @@ export function page({ pkg, info }){
el("li", t`Clean component lifecycle management`),
),
),
el(code, { src: fileURL("./components/examples/customElement/intro.js"), page_id }),
el(code, { src: fileURL("./components/examples/customElement/intro.js") }),
el(h3, t`Getting Started: Web Components Basics`),
el("p").append(T`
@ -95,7 +94,7 @@ export function page({ pkg, info }){
el("p").append(T`
Let’s start with a basic Custom Element example without dd<el> to establish the foundation:
`),
el(code, { src: fileURL("./components/examples/customElement/native-basic.js"), page_id }),
el(code, { src: fileURL("./components/examples/customElement/native-basic.js") }),
el("div", { className: "note" }).append(
el("p").append(T`
@ -124,7 +123,7 @@ export function page({ pkg, info }){
el("dd", t`Allows using on.connected(), on.disconnected() or S.observedAttributes().`)
)
),
el(example, { src: fileURL("./components/examples/customElement/customElementWithDDE.js"), page_id }),
el(example, { src: fileURL("./components/examples/customElement/customElementWithDDE.js") }),
el("div", { className: "tip" }).append(
el("p").append(T`
@ -156,7 +155,7 @@ export function page({ pkg, info }){
el("dd", t`The rendered DOM tree`)
)
),
el(example, { src: fileURL("./components/examples/customElement/dde.js"), page_id }),
el(example, { src: fileURL("./components/examples/customElement/dde.js") }),
el("div", { className: "note" }).append(
el("p").append(T`
@ -188,7 +187,7 @@ export function page({ pkg, info }){
Using the ${el("code", "S.observedAttributes")} creates a reactive connection between your element’s
attributes and its internal rendering. When attributes change, your component automatically updates!
`),
el(example, { src: fileURL("./components/examples/customElement/observedAttributes.js"), page_id }),
el(example, { src: fileURL("./components/examples/customElement/observedAttributes.js") }),
el("div", { className: "callout" }).append(
el("h4", t`How S.observedAttributes Works`),
@ -221,7 +220,7 @@ export function page({ pkg, info }){
<p>Content</p>
` })
),
el(example, { src: fileURL("./components/examples/customElement/shadowRoot.js"), page_id }),
el(example, { src: fileURL("./components/examples/customElement/shadowRoot.js") }),
el("p").append(T`
For more information on Shadow DOM, see
@ -234,7 +233,7 @@ export function page({ pkg, info }){
Besides the encapsulation, the Shadow DOM allows for using the ${el("a", references.mdn_shadow_dom_slot).append(
el("strong", t`<slot>`), t` element(s)`)}. You can simulate this feature using ${el("code", "simulateSlots")}:
`),
el(example, { src: fileURL("./components/examples/customElement/simulateSlots.js"), page_id }),
el(example, { src: fileURL("./components/examples/customElement/simulateSlots.js") }),
el("div", { className: "function-table" }).append(
el("h4", t`simulateSlots`),
el("dl").append(

19
docs/p07-debugging.html.js
View File

@ -15,7 +15,6 @@ const fileURL= url=> new URL(url, import.meta.url);
/** @param {import("./types.d.ts").PageAttrs} attrs */
export function page({ pkg, info }){
const page_id= info.id;
return el(simplePage, { info, pkg }).append(
el("p").append(T`
Debugging is an essential part of application development. This guide provides techniques
@ -36,7 +35,7 @@ export function page({ pkg, info }){
el(code, { content: `
const signal = S(0);
console.log('Current value:', signal.valueOf());
`, page_id }),
`, language: "js" }),
el("div", { className: "warning" }).append(
el("p").append(T`
${el("code", "signal.get")} is OK, but in some situations may lead to unexpected results:
@ -49,7 +48,7 @@ export function page({ pkg, info }){
// but typically this is fine ↓
return signal.get() + 1;
});
` })
`, language: "js" })
),
el("p").append(T`
You can also monitor signal changes by adding a listener:
@ -57,7 +56,7 @@ export function page({ pkg, info }){
el(code, { content: `
// Log every time the signal changes
S.on(signal, value => console.log('Signal changed:', value));
`, page_id }),
`, language: "js" }),
el("h4", t`Debugging derived signals`),
el("p").append(T`
@ -69,7 +68,7 @@ export function page({ pkg, info }){
el("li", t`Add logging/debugger inside the computation function to see when it runs`),
el("li", t`Verify that the computation function actually accesses the signal values with .get()`)
),
el(example, { src: fileURL("./components/examples/debugging/consoleLog.js"), page_id }),
el(example, { src: fileURL("./components/examples/debugging/consoleLog.js") }),
el("h4", t`Examining signal via DevTools`),
el("p").append(T`
@ -77,11 +76,11 @@ export function page({ pkg, info }){
signal objects. It contains the following information:
`),
el("ul").append(
// TODO: value?
el("li", t`listeners: A Set of functions called when the signal value changes`),
el("li", t`actions: Custom actions that can be performed on the signal`),
el("li", t`onclear: Functions to run when the signal is cleared`),
el("li", t`host: Reference to the host element/scope in which the signal was created`),
el("li", t`readonly: Boolean flag indicating if the signal is read-only`)
),
el("p").append(T`
…to determine the current value of the signal, call ${el("code", "signal.valueOf()")}. Don’t hesitate to
@ -121,7 +120,7 @@ export function page({ pkg, info }){
"S.el(S(()=> count.get() % 2), odd=> …)")}).
`),
),
el(code, { src: fileURL("./components/examples/debugging/mutations.js"), page_id }),
el(code, { src: fileURL("./components/examples/debugging/mutations.js") }),
el("h4", t`Memory leaks with signal listeners`),
el("p").append(T`
@ -137,7 +136,7 @@ export function page({ pkg, info }){
el("li", t`Make sure derived signals don’t perform expensive calculations unnecessarily`),
el("li", t`Keep signal computations focused and minimal`)
),
el(code, { src: fileURL("./components/examples/debugging/debouncing.js"), page_id }),
el(code, { src: fileURL("./components/examples/debugging/debouncing.js") }),
el(h3, t`Browser DevTools tips for components and reactivity`),
el("p").append(T`
@ -150,7 +149,7 @@ export function page({ pkg, info }){
that are automatically updated when signal values change. These elements are wrapped in special
comment nodes for debugging (to be true they are also used internally, so please do not edit them by hand):
`),
el(code, { src: fileURL("./components/examples/debugging/dom-reactive-mark.html"), page_id }),
el(code, { src: fileURL("./components/examples/debugging/dom-reactive-mark.html") }),
el("p").append(T`
This is particularly useful when debugging why a reactive section isn’t updating as expected.
You can inspect the elements between the comment nodes to see their current state and the
@ -187,7 +186,7 @@ export function page({ pkg, info }){
so you can see the element and property that changes in the console right away. These properties make it
easier to understand the reactive structure of your application when inspecting elements.
`),
el(example, { src: fileURL("./components/examples/signals/debugging-dom.js"), page_id }),
el(example, { src: fileURL("./components/examples/signals/debugging-dom.js") }),
el("p", { className: "note" }).append(T`
${el("code", "<element>.__dde_reactive")} - An array property on DOM elements that tracks signal-to-element

15
docs/p08-extensions.html.js
View File

@ -14,7 +14,6 @@ const fileURL= url=> new URL(url, import.meta.url);
/** @param {import("./types.js").PageAttrs} attrs */
export function page({ pkg, info }){
const page_id= info.id;
return el(simplePage, { info, pkg }).append(
el("p").append(T`
dd<el> is designed with extensibility in mind. This page covers how to separate
@ -49,7 +48,7 @@ export function page({ pkg, info }){
// Using an addon
el("div", { id: "example" }, myAddon({ option: "value" }));
`, page_id }),
`, language: "js" }),
el(h3, t`Resource Cleanup with Abort Signals`),
el("p").append(T`
@ -83,7 +82,7 @@ export function page({ pkg, info }){
const { signal }= scope;
return el("div", null, externalLibraryAddon({ option: "value" }, signal));
}
`, page_id }),
`, language: "js" }),
el(h3, t`Building Library-Independent Extensions`),
el("p").append(T`
@ -104,7 +103,7 @@ export function page({ pkg, info }){
});
};
}
`, page_id })
`, language: "js" })
),
el("div", { className: "tab" }).append(
el("h5", t`⚠️ Library-Dependent`),
@ -118,7 +117,7 @@ export function page({ pkg, info }){
})(element);
};
}
`, page_id })
`, language: "js" })
)
)
),
@ -177,7 +176,7 @@ export function page({ pkg, info }){
textContent: "All"
})
);
`, page_id }),
`, language: "js" }),
el("div", { className: "callout" }).append(
el("h4", t`Benefits of Signal Factories`),
@ -217,7 +216,7 @@ export function page({ pkg, info }){
const counter = createEnhancedSignal(0);
el("button", { textContent: "Increment", onclick: () => counter.increment() });
el("div", S.text\`Count: \${counter}\`);
`, page_id }),
`, language: "js" }),
el("div", { className: "tip" }).append(
el("p").append(T`
@ -259,7 +258,7 @@ export function page({ pkg, info }){
// Update signal value
count.set(5); // Logs: 5
console.log(doubled.get()); // 10
`, page_id }),
`, language: "js" }),
el("p").append(T`
The independent signals API includes all core functionality (${el("code", "S()")}, ${el("code", "S.on()")},
${el("code", "S.action()")}).

19
docs/p09-optimization.html.js
View File

@ -43,7 +43,6 @@ const references= {
/** @param {import("./types.d.ts").PageAttrs} attrs */
export function page({ pkg, info }){
const page_id= info.id;
return el(simplePage, { info, pkg }).append(
el("p").append(T`
As your applications grow, performance becomes increasingly important. dd<el> provides several
@ -60,7 +59,7 @@ export function page({ pkg, info }){
el("li", t`Simple debugging for performance bottlenecks`)
)
),
el(code, { src: fileURL("./components/examples/optimization/intro.js"), page_id }),
el(code, { src: fileURL("./components/examples/optimization/intro.js") }),
el(h3, t`Memoization with memo: Native vs dd<el>`),
el("p").append(T`
@ -84,7 +83,7 @@ export function page({ pkg, info }){
))
);
}
`, page_id })
`, language: "js" })
),
el("div").append(
el("h5", t`With dd<el>'s memo`),
@ -102,7 +101,7 @@ export function page({ pkg, info }){
)))
);
}
`, page_id })
`, language: "js" })
)
)
),
@ -134,7 +133,7 @@ export function page({ pkg, info }){
memo(todo.id, () =>
el(TodoItem, todo)
))))
`, page_id }),
`, language: "js" }),
el("p").append(T`
The ${el("code", "memo")} function in this context:
@ -146,7 +145,7 @@ export function page({ pkg, info }){
el("li", t`Only calls the generator function when rendering an item with a new key`)
),
el(example, { src: fileURL("./components/examples/optimization/memo.js"), page_id }),
el(example, { src: fileURL("./components/examples/optimization/memo.js") }),
el(h3, t`Creating Memoization Scopes`),
el("p").append(T`
@ -171,7 +170,7 @@ export function page({ pkg, info }){
const container = el("div").append(
...items.map(item => renderItem(item))
);
`, page_id }),
`, language: "js" }),
el("p").append(T`
The scope function accepts options to customize its behavior:
@ -188,7 +187,7 @@ export function page({ pkg, info }){
// Clear cache when signal is aborted
signal: controller.signal
});
`, page_id }),
`, language: "js" }),
el("p").append(T`
You can use custom memo scope as function in (e. g. ${el("code", "S.el(signal, renderList)")}) and as
(Abort) signal use ${el("code", "scope.signal")}.
@ -317,7 +316,7 @@ export function page({ pkg, info }){
// On subsequent renders, the cached fragment is empty!
container.append(memoizedFragment); // Nothing gets appended
`, page_id }),
`, language: "js" }),
el("p").append(T`
This happens because a DocumentFragment is emptied when it's appended to the DOM. When the fragment
@ -338,7 +337,7 @@ export function page({ pkg, info }){
S.el(itemsSignal, items => items.map(item => el("div", item)))
)
);
`, page_id })
`, language: "js" })
),
el("p").append(T`

83
docs/p10-todomvc.html.js
View File

@ -43,7 +43,6 @@ const references= {
/** @param {import("./types.d.ts").PageAttrs} attrs */
export function page({ pkg, info }){
const page_id= info.id;
return el(simplePage, { info, pkg }).append(
el("p").append(T`
${el("a", references.todomvc).append("TodoMVC")} is a project that helps developers compare different
@ -69,7 +68,7 @@ export function page({ pkg, info }){
challenges in a clean, maintainable way.
`),
el(example, { src: fileURL("./components/examples/reallife/todomvc.js"), variant: "big", page_id }),
el(example, { src: fileURL("./components/examples/reallife/todomvc.js"), variant: "big" }),
el(h3, t`Application Architecture Overview`),
el("p").append(T`
@ -118,7 +117,7 @@ export function page({ pkg, info }){
});
});
const todosRemainingS = S(()=> todosS.get().filter(todo => !todo.completed).length);
`, page_id }),
`, language: "js" }),
el("p").append(T`
The ${el("code", "todosSignal")} function creates a custom signal with actions for manipulating the todos:
@ -207,7 +206,7 @@ export function page({ pkg, info }){
});
return out;
}
`, page_id }),
`, language: "js" }),
el("div", { className: "note" }).append(
el("p").append(T`
@ -241,7 +240,7 @@ export function page({ pkg, info }){
memo(todo.id, ()=> el(TodoItem, todo, onDelete, onEdit)))
)
)
`, page_id }),
`, language: "js" }),
el("p").append(T`
The derived signal automatically recalculates whenever either the todos list or the current filter changes,
@ -263,7 +262,7 @@ export function page({ pkg, info }){
type: "checkbox"
}, onToggleAll),
el("label", { htmlFor: "toggle-all", title: "Mark all as complete" }),
`, page_id }),
`, language: "js" }),
el("p").append(T`
The "toggle all" checkbox allows users to mark all todos as completed or active. When the checkbox
@ -300,7 +299,7 @@ export function page({ pkg, info }){
// Component content...
);
}
`, page_id }),
`, language: "js" }),
el("p").append(T`
The TodoItem component maintains its own local UI state with signals, providing immediate
@ -311,16 +310,16 @@ export function page({ pkg, info }){
el(code, { content: `
// Dynamic class attributes
el("a", {
textContent: "All",
className: S(()=> pageS.get() === "all" ? "selected" : ""),
href: "#"
textContent,
classList: { selected: S(()=> pageS.get() === textContent.toLowerCase()) },
href: \`#\${textContent.toLowerCase()}\`
})
// Reactive classList
el("li", {
classList: { completed: isCompleted, editing: isEditing }
})
`, page_id }),
`, language: "js" }),
el("div", { className: "tip" }).append(
el("p").append(T`
@ -341,7 +340,7 @@ export function page({ pkg, info }){
memo(todo.id, ()=> el(TodoItem, todo, onDelete, onEdit)))
)
)
`, page_id }),
`, language: "js" }),
el("p").append(T`
This approach ensures that:
@ -355,18 +354,25 @@ export function page({ pkg, info }){
el("h4", t`Memoizing UI Sections`),
el(code, { content: `
S.el(todosS, todos => memo(todos.length, length=> length
? el("footer", { className: "footer" }).append(
// Footer content...
S.el(todosS, ({ length }) => !length
? el()
: el("footer", { className: "footer" }).append(
// …
memo("filters", ()=>
// …
el("a", {
textContent,
classList: { selected: S(()=> pageS.get() === textContent.toLowerCase()) },
href: \`#\${textContent.toLowerCase()}\`
})
// …
)
: el()
))
`, page_id }),
`, language: "js" }),
el("p").append(T`
By memoizing based on the todos length, the entire footer component is only re-rendered
when todos are added or removed, not when their properties change. This improves performance
by avoiding unnecessary DOM operations.
We memoize the UI section and uses derived signal for the classList. Re-rendering this part is therefore
unnecessary when the number of todos changes.
`),
el("div", { className: "tip" }).append(
@ -389,9 +395,11 @@ export function page({ pkg, info }){
`),
el(code, { content: `
// Event handlers in the main component
const onDelete = on("todo:delete", ev => S.action(todosS, "delete", ev.detail));
const onEdit = on("todo:edit", ev => S.action(todosS, "edit", ev.detail));
`, page_id }),
const onDelete = on("todo:delete", ev =>
S.action(todosS, "delete", /** @type {{ detail: Todo["id"] }} */(ev).detail));
const onEdit = on("todo:edit", ev =>
S.action(todosS, "edit", /** @type {{ detail: Partial<Todo> & { id: Todo["id"] } }} */(ev).detail));
`, language: "js" }),
el("h4", t`2. The TodoItem Component with Scopes and Local State`),
el("p").append(T`
@ -434,7 +442,7 @@ export function page({ pkg, info }){
// Component implementation...
}
`, page_id }),
`, language: "js" }),
el("div", { className: "tip" }).append(
el("p").append(T`
@ -455,7 +463,7 @@ export function page({ pkg, info }){
}).append(
// Component content...
);
`, page_id }),
`, language: "js" }),
el("p").append(T`
Benefits of using ${el("code", "classList")}:
@ -494,7 +502,7 @@ export function page({ pkg, info }){
value: title,
"data-id": id
}, onBlurEdit, onKeyDown, addFocus)
`, page_id }),
`, language: "js" }),
el("p").append(T`
This approach offers several advantages:
@ -522,27 +530,26 @@ export function page({ pkg, info }){
el("h4", t`Conditional Todo List`),
el(code, { content: `
S.el(todosS, todos => todos.length
? el("main", { className: "main" }).append(
? el()
: el("main", { className: "main" }).append(
// Main content with toggle all and todo list
)
: el()
)
`, page_id }),
`, language: "js" }),
el("h4", t`Conditional Edit Form`),
el(code, { content: `
S.el(isEditing, editing => editing
? el("form", null, onSubmitEdit).append(
S.el(isEditing, editing => !editing
? el()
: el("form", null, onSubmitEdit).append(
el("input", {
className: "edit",
name: "edit",
name: formEdit,
value: title,
"data-id": id
}, onBlurEdit, onKeyDown, addFocus)
)
: el()
)
`, page_id }),
`, language: "js" }),
el("h4", t`Conditional Clear Completed Button`),
el(code, { content: `
@ -553,7 +560,7 @@ export function page({ pkg, info }){
{ textContent: "Clear completed", className: "clear-completed" },
onClearCompleted)
)
`, page_id }),
`, language: "js" }),
el("div", { className: "note" }).append(
el("p").append(T`
@ -599,7 +606,7 @@ export function page({ pkg, info }){
if (event.key !== "Escape") return;
isEditing.set(false);
});
`, page_id }),
`, language: "js" }),
el("div", { className: "tip" }).append(
el("p").append(T`
@ -630,7 +637,7 @@ export function page({ pkg, info }){
${el("strong", "Declarative Class Management:")} Using the classList property for cleaner class handling
`),
el("li").append(T`
${el("strong", "Focus Management:")} Reliable input focus with setTimeout
${el("strong", "Focus Management:")} Reliable input focus with requestAnimationFrame
`),
el("li").append(T`
${el("strong", "Persistent Storage:")} Automatically saving application state with signal listeners

15
docs/p11-ssr.html.js
View File

@ -14,7 +14,6 @@ const fileURL= url=> new URL(url, import.meta.url);
/** @param {import("./types.js").PageAttrs} attrs */
export function page({ pkg, info }){
const page_id= info.id;
return el(simplePage, { info, pkg }).append(
el("div", { className: "warning" }).append(
el("p").append(T`
@ -45,7 +44,7 @@ export function page({ pkg, info }){
than jsdom
`),
),
el(code, { src: fileURL("./components/examples/ssr/intro.js"), page_id }),
el(code, { src: fileURL("./components/examples/ssr/intro.js") }),
el(h3, t`Why Server-Side Rendering?`),
el("p").append(T`
@ -71,27 +70,27 @@ export function page({ pkg, info }){
el("li", t`Provides a promise queue system for managing async operations during rendering`),
el("li", t`Handles DOM property/attribute mapping differences between browsers and jsdom`)
),
el(code, { src: fileURL("./components/examples/ssr/start.js"), page_id }),
el(code, { src: fileURL("./components/examples/ssr/start.js") }),
el(h3, t`Basic SSR Example`),
el("p").append(T`
Here’s a simple example of how to use dd<el> for server-side rendering in a Node.js script:
`),
el(code, { src: fileURL("./components/examples/ssr/basic-example.js"), page_id }),
el(code, { src: fileURL("./components/examples/ssr/basic-example.js") }),
el(h3, t`Building a Static Site Generator`),
el("p").append(T`
You can build a complete static site generator with dd<el>. In fact, this documentation site
is built using dd<el> for server-side rendering! Here’s how the documentation build process works:
`),
el(code, { src: fileURL("./components/examples/ssr/static-site-generator.js"), page_id }),
el(code, { src: fileURL("./components/examples/ssr/static-site-generator.js") }),
el(h3, t`Working with Async Content in SSR`),
el("p").append(T`
The jsdom export includes a queue system to handle asynchronous operations during rendering.
This is crucial for components that fetch data or perform other async tasks.
`),
el(code, { src: fileURL("./components/examples/ssr/async-data.js"), page_id }),
el(code, { src: fileURL("./components/examples/ssr/async-data.js") }),
el(h3, t`Working with Dynamic Imports for SSR`),
el("p").append(T`
@ -119,7 +118,7 @@ export function page({ pkg, info }){
el("p").append(T`
Follow this pattern when creating server-side rendered pages:
`),
el(code, { src: fileURL("./components/examples/ssr/pages.js"), page_id }),
el(code, { src: fileURL("./components/examples/ssr/pages.js") }),
el(h3, t`SSR Considerations and Limitations`),
el("p").append(T`
@ -141,7 +140,7 @@ export function page({ pkg, info }){
This documentation site itself is built using dd<el>’s SSR capabilities.
The build process collects all page components, renders them with jsdom, and outputs static HTML files.
`),
el(code, { src: fileURL("./components/examples/ssr/static-site-generator.js"), page_id }),
el(code, { src: fileURL("./components/examples/ssr/static-site-generator.js") }),
el("p").append(T`
The resulting static files can be deployed to any static hosting service,

22
docs/p12-ireland.html.js
View File

@ -1,9 +1,8 @@
import { T, t } from "./utils/index.js";
export const info= {
title: t`Ireland Components`,
fullTitle: t`Interactive Demo Components with Server-Side Pre-Rendering`,
description: t`Creating live, interactive component examples in documentation with server-side
rendering and client-side hydration.`,
fullTitle: t`Server-Side Pre-Rendering and Client-Side Rehydration`,
description: t`Using Ireland components for server-side pre-rendering and client-side rehydration`,
};
import { el } from "deka-dom-el";
@ -16,7 +15,6 @@ const fileURL= url=> new URL(url, import.meta.url);
/** @param {import("./types.js").PageAttrs} attrs */
export function page({ pkg, info }){
const page_id= info.id;
return el(simplePage, { info, pkg }).append(
el("div", { className: "warning" }).append(
el("p").append(T`
@ -67,7 +65,7 @@ export function page({ pkg, info }){
src: fileURL("./components/examples/path/to/component.js"),
exportName: "NamedExport", // optional, defaults to "default",
})
`, page_id }),
`, language: "js" }),
el("p").append(T`
During the build process (${el("code", "bs/docs.js")}), the following happens:
@ -119,7 +117,7 @@ export function page({ pkg, info }){
// Final build step - trigger SSR end event
dispatchEvent("onssrend");
`, page_id }),
`, language: "js" }),
el("h4", t`File Registration`),
el(code, { content: `
// From docs/ssr.js - File registration system
@ -145,7 +143,7 @@ export function page({ pkg, info }){
head[head instanceof HTMLScriptElement ? "src" : "href"] = file_name;
document.head.append(head);
}
`, page_id }),
`, language: "js" }),
el("h4", t`Server-Side Rendering`),
el(code, { content: `
// From docs/components/ireland.html.js - Server-side component implementation
@ -226,7 +224,7 @@ export function page({ pkg, info }){
\`.trim())
);
}
`, page_id }),
`, language: "js" }),
el("h4", t`Client-Side Hydration`),
el(code, { content: `
// From docs/components/ireland.js.js - Client-side hydration
@ -250,7 +248,7 @@ export function page({ pkg, info }){
});
});
}
`, page_id }),
`, language: "js" }),
el(h3, t`Live Example`),
el("p").append(T`
@ -259,14 +257,10 @@ export function page({ pkg, info }){
rendered with the Ireland component system:
`),
el(code, {
src: fileURL("./components/examples/ireland-test/counter.js"),
page_id
}),
el(code, { src: fileURL("./components/examples/ireland-test/counter.js") }),
el(ireland, {
src: fileURL("./components/examples/ireland-test/counter.js"),
exportName: "CounterStandard",
page_id
}),
el("p").append(T`

3
docs/p13-appendix.html.js
View File

@ -40,7 +40,6 @@ const references= {
/** @param {import("./types.d.ts").PageAttrs} attrs */
export function page({ pkg, info }){
const page_id= info.id;
return el(simplePage, { info, pkg }).append(
el("p").append(T`
This reference guide provides a comprehensive summary of dd<el>’s key concepts, best practices,
@ -166,7 +165,7 @@ export function page({ pkg, info }){
className: S(() => countS.get() > 10 ? 'warning' : '')
})
);
`, page_id }),
`, language: "js" }),
el(h3, t`Key Concepts Reference`),

3
docs/p14-converter.html.js
View File

@ -13,7 +13,6 @@ import { converter } from "./components/converter.html.js";
/** @param {import("./types.d.ts").PageAttrs} attrs */
export function page({ pkg, info }){
const page_id= info.id;
return el(simplePage, { info, pkg }).append(
el("p").append(T`
Transitioning from HTML to dd<el> is simple with our interactive converter. This tool helps you quickly
@ -28,7 +27,7 @@ export function page({ pkg, info }){
),
// The actual converter component
el(converter, { page_id }),
el(converter),
el(h3, t`Next Steps`),
el("p").append(T`

32
docs/p15-examples.html.js
View File

@ -14,7 +14,6 @@ const fileURL= url=> new URL(url, import.meta.url);
/** @param {import("./types.d.ts").PageAttrs} attrs */
export function page({ pkg, info }){
const page_id= info.id;
return el(simplePage, { info, pkg }).append(
el("p").append(T`
Real-world application examples showcasing how to build complete, production-ready interfaces with dd<el>:
@ -25,23 +24,21 @@ export function page({ pkg, info }){
third-party charting library, data fetching and state management, responsive layout design, and multiple
interactive components working together.
`),
el(example, { src: fileURL("./components/examples/case-studies/data-dashboard.js"), variant: "big", page_id }),
el(example, { src: fileURL("./components/examples/case-studies/data-dashboard.js"), variant: "big" }),
el(h3, t`Interactive Form`),
el("p").append(T`
Complete form with real-time validation, conditional rendering, and responsive design. Form handling with
real-time validation, reactive UI updates, complex form state management, and clean separation of concerns.
`),
el(example, { src: fileURL("./components/examples/case-studies/interactive-form.js"), variant: "big", page_id }),
el(example, { src: fileURL("./components/examples/case-studies/interactive-form.js"), variant: "big" }),
el(h3, t`Interactive Image Gallery`),
el("p").append(T`
Responsive image gallery with lightbox, keyboard navigation, and filtering. Dynamic loading of content,
lightbox functionality, animation handling, and keyboard and gesture navigation support.
`),
el(example, { src: fileURL("./components/examples/case-studies/image-gallery.js"), variant: "big", page_id }),
el(example, { src: fileURL("./components/examples/case-studies/image-gallery.js"), variant: "big" }),
el(h3, t`Task Manager`),
el("p").append(T`
@ -49,8 +46,29 @@ export function page({ pkg, info }){
with signals, drag and drop functionality, local storage persistence, and responsive design for different
devices.
`),
el(example, { src: fileURL("./components/examples/case-studies/task-manager.js"), variant: "big", page_id }),
el(example, { src: fileURL("./components/examples/case-studies/task-manager.js"), variant: "big" }),
el(h3, t`Product Catalog with asyncSignal`),
el("p").append(T`
Interactive product catalog with search, sorting, and pagination. Features include dynamic product filtering,
responsive UI with detailed view toggles, error handling with retry capability, and proper resource cleanup.
Demonstrates advanced signal usage, including derived signals, abortable async data fetching, and optimized
rendering patterns.
`),
el("div", { className: "callout" }).append(
el("h4", t`asyncSignal Utility`),
el("p").append(T`
This example showcases the asyncSignal utility, which is a powerful abstraction for handling async data
fetching with proper state management. It provides:
`),
el("ul").append(
el("li", t`Automatic tracking of loading, success, and error states`),
el("li", t`AbortController integration for request cancellation`),
el("li", t`Error handling and recovery`),
el("li", t`Options for caching previous data during loading states`)
)
),
el(example, { src: fileURL("./components/examples/case-studies/products.js"), variant: "big" }),
el(h3, t`TodoMVC`),
el("p").append(T`

4
docs/ssr.js
View File

@ -1,4 +1,8 @@
export { t } from "./utils/index.js";
/** @type {string} */
export let page_id;
/** @param {string} id */
export function currentPageId(id){ page_id= id; }
export const path_target= {
root: "dist/docs/",
css: "dist/docs/",

4
package-lock.json generated
View File

@ -1,12 +1,12 @@
{
"name": "deka-dom-el",
"version": "0.9.3-alpha",
"version": "0.9.4-alpha",
"lockfileVersion": 3,
"requires": true,
"packages": {
"": {
"name": "deka-dom-el",
"version": "0.9.3-alpha",
"version": "0.9.4-alpha",
"license": "MIT",
"devDependencies": {
"@size-limit/preset-small-lib": "~11.2",

13
package.json
View File

@ -1,10 +1,10 @@
{
"name": "deka-dom-el",
"version": "0.9.3-alpha",
"version": "0.9.4-alpha",
"description": "A low-code library that simplifies the creation of native DOM elements/components using small wrappers and tweaks.",
"author": "Jan Andrle <andrle.jan@centrum.cz>",
"license": "MIT",
"homepage": "https://github.com/jaandrle/deka-dom-el",
"homepage": "https://jaandrle.github.io/deka-dom-el/",
"repository": {
"type": "git",
"url": "git+ssh://git@github.com/jaandrle/deka-dom-el.git"
@ -52,7 +52,6 @@
"maxdepth": 3,
"maxcomplexity": 14,
"globals": {
"requestIdleCallback": false,
"AbortController": false,
"AbortSignal": false,
"FinalizationRegistry": false
@ -61,25 +60,25 @@
"size-limit": [
{
"path": "./index.js",
"limit": "10.5 kB",
"limit": "10 kB",
"gzip": false,
"brotli": false
},
{
"path": "./signals.js",
"limit": "12.5 kB",
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11
src/dom-lib/events-observer.js
View File

@ -1,5 +1,5 @@
import { enviroment as env, evc, evd } from './common.js';
import { isInstance } from "../helpers.js";
import { isInstance, requestIdle } from "../helpers.js";
/**
* Connection changes observer for tracking element connection/disconnection
@ -149,15 +149,6 @@ function connectionsChangesObserverConstructor(){
observer.disconnect();
}
//TODO: remount support?
/**
* Schedule a task during browser idle time
* @returns {Promise<void>} Promise that resolves when browser is idle
*/
function requestIdle(){ return new Promise(function(resolve){
(requestIdleCallback || requestAnimationFrame)(resolve);
}); }
/**
* Collects child elements from the store that are contained by the given element
* @param {Element} element - Parent element

9
src/helpers.js
View File

@ -68,3 +68,12 @@ export function observedAttributes(instance, observedAttribute){
* @returns {string} The camelCase string
*/
function kebabToCamel(name){ return name.replace(/-./g, x=> x[1].toUpperCase()); }
/**
* Schedule a task during browser idle time
* @returns {Promise<void>} Promise that resolves when browser is idle
*/
export function requestIdle(){ return new Promise(function(resolve){
(globalThis.requestIdleCallback || requestAnimationFrame)(resolve);
});
}

26
src/signals-lib/signals-lib.js
View File

@ -1,15 +1,14 @@
import { queueSignalWrite, mark } from "./helpers.js";
export { mark };
import { hasOwn, oCreate, oAssign } from "../helpers.js";
import { hasOwn, oCreate, oAssign, requestIdle } from "../helpers.js";
const Signal = oCreate(null, {
const SignalReadOnly= oCreate(null, {
get: { value(){ return read(this); } },
set: { value(...v){ return write(this, ...v); } },
toJSON: { value(){ return read(this); } },
valueOf: { value(){ return this[mark] && this[mark].value; } }
});
const SignalReadOnly= oCreate(Signal, {
set: { value(){ return; } },
const Signal = oCreate(SignalReadOnly, {
set: { value(...v){ return write(this, ...v); } },
});
/**
* Checks if a value is a signal
@ -214,7 +213,7 @@ signal.el= function(s, map){
*/
function requestCleanUpReactives(host){
if(!host || !host[key_reactive]) return;
(requestIdleCallback || setTimeout)(function(){
requestIdle().then(function(){
host[key_reactive]= host[key_reactive]
.filter(([ s, el ])=> el.isConnected ? true : (removeSignalListener(...s), false));
});
@ -314,9 +313,14 @@ export const signals_config= {
function removeSignalsFromElements(s, listener, ...notes){
const { current }= scope;
current.host(function(element){
if(!element[key_reactive]) element[key_reactive]= [];
const is_first= !element[key_reactive];
if(is_first) element[key_reactive]= [];
element[key_reactive].push([ [ s, listener ], ...notes ]);
if(current.prevent) return; // typically document.body, doenst need auto-remove as it should happen on page leave
if(
!is_first
// typically document.body, doenst need auto-remove as it should happen on page leave
|| current.prevent
) return;
on.disconnected(()=>
/*! Clears all Signals listeners added in the current scope/host (`S.el`, `assign`, …?).
You can investigate the `__dde_reactive` key of the element. */
@ -344,7 +348,7 @@ const cleanUpRegistry = new FinalizationRegistry(function(s){
*/
function create(is_readonly, value, actions){
const varS = oCreate(is_readonly ? SignalReadOnly : Signal);
const SI= toSignal(varS, value, actions, is_readonly);
const SI= toSignal(varS, value, actions);
cleanUpRegistry.register(SI, SI[mark]);
return SI;
}
@ -367,11 +371,10 @@ const protoSigal= oAssign(oCreate(), {
* @param {Object} s - Object to transform
* @param {any} value - Initial value
* @param {Object} actions - Custom actions
* @param {boolean} [readonly=false] - Whether the signal is readonly
* @returns {Object} Signal object with get() and set() methods
* @private
*/
function toSignal(s, value, actions, readonly= false){
function toSignal(s, value, actions){
const onclear= [];
if(typeOf(actions)!=="[object Object]")
actions= {};
@ -385,7 +388,6 @@ function toSignal(s, value, actions, readonly= false){
value: oAssign(oCreate(protoSigal), {
value, actions, onclear, host,
listeners: new Set(),
readonly
}),
enumerable: false,
writable: false,