mirror of
https://github.com/jaandrle/deka-dom-el
synced 2025-04-03 20:35:53 +02:00
125 lines
4.5 KiB
Markdown
125 lines
4.5 KiB
Markdown
**WIP** (the experimentation phase)
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| [source code on GitHub](https://github.com/jaandrle/deka-dom-el)
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| [*mirrored* on Gitea](https://gitea.jaandrle.cz/jaandrle/deka-dom-el)
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<p align="center">
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<img src="docs/assets/logo.svg" alt="Deka DOM Elements Logo" width="180" height="180">
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</p>
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# Deka DOM Elements (dd\<el\> or DDE)
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***Vanilla for flavouring — a full-fledged feast for large projects***
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*…use simple DOM API by default and library tools and logic when you need them*
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```javascript
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// 🌟 Reactive component with clear separation of concerns
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document.body.append(
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el(EmojiCounter, { initial: "🚀" })
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);
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function EmojiCounter({ initial }) {
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// ✨ State - Define reactive data
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const count = S(0);
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const emoji = S(initial);
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/** @param {HTMLOptionElement} el */
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const isSelected= el=> (el.selected= el.value===initial);
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// 🔄 View - UI updates automatically when signals change
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return el().append(
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el("p", {
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className: "output",
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textContent: S(() =>
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`Hello World ${emoji.get().repeat(clicks.get())}`),
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}),
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// 🎮 Controls - Update state on events
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el("button", { textContent: "Add Emoji" },
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on("click", () => count.set(count.get() + 1))
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),
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el("select", null,
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on("change", e => emoji.set(e.target.value))
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).append(
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el(Option, "🎉", isSelected),
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el(Option, "🚀", isSelected),
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el(Option, "💖", isSelected),
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)
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);
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}
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function Option({ textContent }){
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return el("option", { value: textContent, textContent });
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}
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```
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Creating reactive elements, components, and Web Components using the native
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[IDL](https://developer.mozilla.org/en-US/docs/Glossary/IDL)/JavaScript DOM API enhanced with
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[**signals/observables**](#understanding-signals).
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## Features at a Glance
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- ✅ **No build step required** — use directly in browsers or Node.js
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- ☑️ **Lightweight** — ~10-15kB minified (original goal 10kB) with zero/minimal dependencies
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- ✅ **Declarative & functional approach** for clean, maintainable code
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- ✅ **Signals and events** for reactive UI
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- ✅ **Optional build-in signals** with support for custom reactive implementations
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- ✅ **Server-side rendering** support via [jsdom](https://github.com/jsdom/jsdom)
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- ✅ **TypeScript support** (work in progress)
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- ☑️ **Support for debugging with browser DevTools** without extensions
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- ☑️ **Enhanced Web Components** support (work in progress)
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## Why Another Library?
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This library bridges the gap between minimal solutions like van/hyperscript and more comprehensive frameworks like
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[solid-js](https://github.com/solidjs/solid), offering a balanced trade-off between size, complexity, and usability.
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Following functional programming principles, dd\<el\> starts with pure JavaScript (DOM API) and gradually adds
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auxiliary functions. These range from minor improvements to advanced features for building complete declarative
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reactive UI templates.
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A key advantage: any internal function (`assign`, `classListDeclarative`, `on`, `dispatchEvent`, `S`, etc.) can be used
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independently while also working seamlessly together. This modular approach makes it easier to integrate the library
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into existing projects.
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## Getting Started
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### Installation
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#### npm
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```bash
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# TBD
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# npm install deka-dom-el
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```
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#### Direct Script
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```html
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<script src="https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/iife-with-signals.min.js"></script>
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<script type="module">
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const { el, S } = DDE;
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</script>
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```
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### Documentation
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- [**Interactive Guide**](https://jaandrle.github.io/deka-dom-el): WIP
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- [Examples](./examples/): TBD/WIP
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## Understanding Signals
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Signals are the reactive backbone of Deka DOM Elements:
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- [Signals — what's going on behind the scenes](https://itnext.io/signals-whats-going-on-behind-the-scenes-ec858589ea63)
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- [The Evolution of Signals in JavaScript](https://dev.to/this-is-learning/the-evolution-of-signals-in-javascript-8ob)
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- [TC39 Signals Proposal](https://github.com/tc39/proposal-signals) (future standard)
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- [Observer pattern](https://en.wikipedia.org/wiki/Observer_pattern) (underlying concept)
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## Inspiration and Alternatives
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- [vanjs-org/van](https://github.com/vanjs-org/van) - World's smallest reactive UI framework
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- [adamhaile/S](https://github.com/adamhaile/S) - Simple, clean, fast reactive programming
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- [hyperhype/hyperscript](https://github.com/hyperhype/hyperscript) - Create HyperText with JavaScript
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- [potch/signals](https://github.com/potch/signals) - A small reactive signals library
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- [jaandrle/dollar_dom_component](https://github.com/jaandrle/dollar_dom_component) -
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Functional DOM components without JSX/virtual DOM
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