mirror of
https://github.com/jaandrle/deka-dom-el
synced 2024-11-23 00:59:38 +01:00
122 lines
6.7 KiB
JavaScript
122 lines
6.7 KiB
JavaScript
import { simplePage } from "./layout/simplePage.html.js";
|
||
|
||
import { el } from "deka-dom-el";
|
||
import { example } from "./components/example.html.js";
|
||
import { h3 } from "./components/pageUtils.html.js";
|
||
import { mnemonic } from "./components/mnemonic/elements-init.js";
|
||
import { code } from "./components/code.html.js";
|
||
/** @param {string} url */
|
||
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("h2", "Native JavaScript DOM elements creations"),
|
||
el("p", "Let’s go through all patterns we would like to use and what needs to be improved for better experience."),
|
||
|
||
el(code, { src: fileURL("./components/examples/elements/intro.js"), page_id }),
|
||
|
||
el(h3, "Creating element(s) (with custom attributes)"),
|
||
el("p").append(
|
||
"You can create a native DOM element by using the ",
|
||
el("a", { href: "https://developer.mozilla.org/en-US/docs/Web/API/Document/createElement", title: "MDN documentation for document.createElement()" }).append(
|
||
el("code", "document.createElement()")
|
||
), ". ",
|
||
"It is also possible to provide a some attribute(s) declaratively using ", el("code", "Object.assign()"), ". ",
|
||
"More precisely, this way you can sets some ",
|
||
el("a", {
|
||
href: "https://developer.mozilla.org/en-US/docs/Glossary/IDL",
|
||
title: "MDN page about Interface Description Language"
|
||
}).append(
|
||
el("abbr", { textContent: "IDL", title: "Interface Description Language" })
|
||
), " also known as a JavaScript property."
|
||
),
|
||
el(example, { src: fileURL("./components/examples/elements/nativeCreateElement.js"), page_id }),
|
||
el("p").append(
|
||
"To make this easier, you can use the ", el("code", "el"), " function. ",
|
||
"Internally in basic examples, it is wrapper around ", el("code", "assign(document.createElement(…), { … })"), "."
|
||
),
|
||
el(example, { src: fileURL("./components/examples/elements/dekaCreateElement.js"), page_id }),
|
||
el("p").append(
|
||
"The ", el("code", "assign"), " function provides improved behaviour of ", el("code", "Object.assign()"), ". ",
|
||
"You can declaratively sets any IDL and attribute of the given element. ",
|
||
"Function prefers IDL and fallback to the ", el("code", "element.setAttribute"), " if there is no writable property in the element prototype."
|
||
),
|
||
el("p").append(
|
||
"You can study all JavaScript elements interfaces to the corresponding HTML elements. ",
|
||
"All HTML elements inherits from ", el("a", { textContent: "HTMLElement", href: "https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement" }), ". ",
|
||
"To see all available IDLs for example for paragraphs, see ", el("a", { textContent: "HTMLParagraphElement", href: "https://developer.mozilla.org/en-US/docs/Web/API/HTMLParagraphElement" }), ". ",
|
||
"Moreover, the ", el("code", "assign"), " provides a way to sets declaratively some convenient properties:"
|
||
),
|
||
el("ul").append(
|
||
el("li").append(
|
||
"It is possible to sets ", el("code", "data-*"), "/", el("code", "aria-*"), " attributes using object notation."
|
||
),
|
||
el("li").append(
|
||
"In opposite, it is also possible to sets ", el("code", "data-*"), "/", el("code", "aria-*"), " attribute using camelCase notation."
|
||
),
|
||
el("li").append(
|
||
"You can use string or object as a value for ", el("code", "style"), " property."
|
||
),
|
||
el("li").append(
|
||
el("code", "className"), " (IDL – preffered)/", el("code", "class"), " are ways to add CSS class to the element. ",
|
||
"You can use string (similarly to ", el("code", "class=\"…\"") ," syntax in HTML) or array of strings. ",
|
||
"This is handy to concat conditional classes."
|
||
),
|
||
el("li").append(
|
||
"Use ", el("code", "classList"), " to toggle specific classes. This will be handy later when the reactivity via observables is beeing introduced.",
|
||
),
|
||
el("li").append(
|
||
"The ", el("code", "assign"), " also accepts the ", el("code", "undefined"), " as a value for any property to remove it from the element declaratively. ",
|
||
"Also for some IDL the corresponding attribute is removed as it can be confusing. ",
|
||
el("em").append(
|
||
"For example, natievly the element’s ", el("code", "id"), " is removed by setting the IDL to an empty string."
|
||
)
|
||
),
|
||
el("li").append(
|
||
"You can use ", el("code", "="), " or ", el("code", "."), " to force processing given key as attribute/property of the element."
|
||
)
|
||
),
|
||
el("p").append(
|
||
"For processing, the ", el("code", "assign"), " internally uses ", el("code", "assignAttribute"), " and ", el("code", "classListDeclarative"), "."
|
||
),
|
||
el(example, { src: fileURL("./components/examples/elements/dekaAssign.js"), page_id }),
|
||
|
||
el(h3, "Native JavaScript templating"),
|
||
el("p", "By default, the native JS has no good way to define HTML template using DOM API:"),
|
||
el(example, { src: fileURL("./components/examples/elements/nativeAppend.js"), page_id }),
|
||
el("p").append(
|
||
"This library therefore overwrites the ", el("code", "append"), " method of created elements to always return parent element."
|
||
),
|
||
el(example, { src: fileURL("./components/examples/elements/dekaAppend.js"), page_id }),
|
||
|
||
|
||
el(h3, "Basic (state-less) components"),
|
||
el("p").append(
|
||
"You can use functions for encapsulation (repeating) logic. ",
|
||
"The ", el("code", "el"), " accepts function as first argument. ",
|
||
"In that case, the function should return dom elements and the second argument for ", el("code", "el"), " is argument for given element."
|
||
),
|
||
el(example, { src: fileURL("./components/examples/elements/dekaBasicComponent.js"), page_id }),
|
||
el("p").append(
|
||
"As you can see, in case of state-less/basic components there is no difference",
|
||
" between calling component function directly or using ", el("code", "el"), " function.",
|
||
),
|
||
el("p", { className: "notice" }).append(
|
||
"It is nice to use similar naming convention as native DOM API. ",
|
||
"This allows us to use ", el("a", { textContent: "the destructuring assignment syntax", href: "https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Destructuring_assignment", title: "Destructuring assignment | MDN" }),
|
||
" and keep track of the native API (things are best remembered through regular use).",
|
||
),
|
||
|
||
el(h3, "Creating non-HTML elements"),
|
||
el("p").append(
|
||
"Similarly to the native DOM API (", el("a", { href: "https://developer.mozilla.org/en-US/docs/Web/API/Document/createElementNS", title: "MDN" }).append(el("code", "document.createElementNS")), ") for non-HTML elements",
|
||
" we need to tell JavaScript which kind of the element to create.",
|
||
" We can use the ", el("code", "elNS"), " function:"
|
||
),
|
||
el(example, { src: fileURL("./components/examples/elements/dekaElNS.js"), page_id }),
|
||
|
||
el(mnemonic)
|
||
);
|
||
}
|