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https://github.com/jaandrle/deka-dom-el
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79
index.d.ts
vendored
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79
index.d.ts
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/**
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* @private
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*/
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type T_DOM_HETNM= HTMLElementTagNameMap & SVGElementTagNameMap & {
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'<>': DocumentFragment,
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'': HTMLElement,
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'zzz_text': Text
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}
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/**
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* @private
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*/
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type T_DOM_ATTRS_MODIFIED= {
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/**
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* In fact argumen for `*.setAttribute("style", *)`.
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*/
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style: string
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/**
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* Provide option to add/remove/toggle CSS clasess (index of object) using 1/0/-1. In fact `el.classList.toggle(class_name)` for `-1` and `el.classList.toggle(class_name, Boolean(...))` for others.
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*/
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classList: Record<string,-1|0|1>
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}
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/**
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* Just element attributtes
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*
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* In most cases, you can use native propertie such as [MDN WEB/API/Element](https://developer.mozilla.org/en-US/docs/Web/API/Element) and so on (e.g. [`Text`](https://developer.mozilla.org/en-US/docs/Web/API/Text)).
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*
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* There is added support for `data[A-Z].*`/`aria[A-Z].*` to be converted to the kebab-case alternatives.
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* @private
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*/
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type T_DOM_ATTRS<T extends keyof T_DOM_HETNM | T_DOM_HETNM[keyof T_DOM_HETNM]>=
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T extends keyof T_DOM_HETNM ?
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Omit<T_DOM_HETNM[T],"classList"> & T_DOM_ATTRS_MODIFIED :
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Omit<T,"classList"> & T_DOM_ATTRS_MODIFIED;
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/**
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* Procedure for merging object into the element properties.
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* Very simple example: `$dom.assign(document.body, { className: "test" });` is equivalent to `document.body.className= "test";`.
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* It is not deep copy in general, but it supports `style`, `style_vars` and `dataset` objects (see below).
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*
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* **#1: All together**
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* ```javascript
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* const el= document.body;
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* const onclick= function(){ console.log(this.dataset.js_param); };
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* $dom.assign(el, { textContent: "BODY", style: "color: red;", dataset: { js_param: "CLICKED" }, onclick });
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* //result HTML: <body style="color: red;" data-js_param="CLICKED">BODY</body>
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* //console output on click: "CLICKED"
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* $dom.assign(el, { style: { color: "green" } });
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* //result HTML: <body style="color: green;" data-js_param="CLICKED">BODY</body>
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* //console output on click: "CLICKED"
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* ```
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*
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* **`\*.classList.toggle`**
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* ```javascript
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* const el= document.body;
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* $dom.assign(el, { classList: { testClass: -1 } });
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* //result HTML: <body class="testClass">…</body>
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* $dom.assign(el, { classList: { testClass: -1 } });
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* //result HTML: <body class="">…</body>
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*
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* $dom.assign(el, { classList: { testClass: true } });//or 1
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* //result HTML: <body class="testClass">…</body>
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* $dom.assign(el, { classList: { testClass: false } });//or 0
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* //result HTML: <body class="">…</body>
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* //...
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* ```
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*
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* **#3 Links and images**
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* ```javascript
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* $dom.assign(A_ELEMENT, { href: "www.google.com" });//=> <a href="www.google.com" …
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* $dom.assign(IMG_ELEMENT, { src: "image.png" });//=> <img src="image.png" …
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*
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* **#4 data\* and aria\***
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* $dom.assign(el, { ariaLabel: "The aria-label", dataExample: "data-example" });//=> <body aria-label="The aria-label" data-example="data-example">
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* ```
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* @category Public
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* @version 2.0.0
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*/
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export function assign<EL extends HTMLElement>(element: EL, ...attrs_array: T_DOM_ATTRS<EL>[]): EL
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export function el<TAG extends keyof T_DOM_HETNM>(tag_name: TAG, attrs: T_DOM_ATTRS<T_DOM_HETNM[TAG]>): T_DOM_HETNM[TAG]
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75
index.js
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75
index.js
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[ HTMLElement, DocumentFragment ].forEach(c=> {
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const { append }= c.prototype;
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c.prototype.append= function(...els){ append.apply(this, els); return this; };
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});
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export function createElement(tag, attributes){
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if(tag==="<>") return document.createDocumentFragment();
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if(tag==="") return document.createTextNode(attributes.textContent ?? attributes.innerText ?? attributes.innerHTML);
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return assign(document.createElement(tag), attributes);
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}
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export { createElement as el };
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export function createElementNS(tag, attributes, attributes_todo){
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let namespace= "svg";
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if(typeof attributes_todo !== "undefined"){
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namespace= tag; tag= attributes; attributes= attributes_todo; }
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if(tag==="<>") return document.createDocumentFragment();
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if(tag==="") return document.createTextNode(attributes.textContent ?? attributes.innerText ?? attributes.innerHTML);
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return assign(document.createElementNS(namespace==="svg" ? "http://www.w3.org/2000/svg" : namespace, tag), attributes);
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}
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export { createElementNS as elNS };
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export function assign(element, ...attributes){
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// prefers https://developer.mozilla.org/en-US/docs/Glossary/IDL
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if(!attributes.length) return element;
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const is_svg= element instanceof SVGElement;
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const setRemoveAttr= (is_svg ? setRemoveNS : setRemove).bind(null, element, "Attribute");
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Object.entries(Object.assign({}, ...attributes)).forEach(function([ key, attr ]){
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if(key[0]==="=") return setRemoveAttr(key.slice(1), attr);
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if(key[0]===".") return setDelete(element, key.slice(1), attr);
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if(typeof attr === "object"){
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switch(key){
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case "style": return forEachEntries(attr, setRemove.bind(null, element.style, "Property"))
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case "dataset": return forEachEntries(attr, setDelete.bind(null, element.dataset));
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case "ariaset": return forEachEntries(attr, (key, val)=> setRemoveAttr("aria-"+key, val));
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case "classList": return classListDeclartive(element, attr);
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default: return Reflect.set(element, key, attr);
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}
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}
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if(/(aria|data)([A-Z])/.test(key)){
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key= key.replace(/([a-z])([A-Z])/g, "$1-$2").toLowerCase();
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return setRemoveAttr(key, attr);
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}
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switch(key){
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case "href" || "src" || "style":
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return setRemoveAttr(key, attr);
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case "xlink:href":
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return setRemoveAttr(key, attr, "http://www.w3.org/1999/xlink");
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case "textContent" || "innerText":
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if(!is_svg) break;
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return element.appendChild(document.createTextNode(attr));
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}
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if(key in element && !is_svg)
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return setDelete(element, key, attr);
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return setRemoveAttr(key, attr);
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});
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return element;
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}
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export function classListDeclartive(element, toggle){
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if(typeof toggle !== "object") return element;
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forEachEntries(toggle,
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(class_name, val)=>
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element.classList.toggle(class_name, val===-1 ? undefined : Boolean(val)))
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return element;
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}
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export function empty(el){ Array.from(el.children).forEach(el=> el.remove()); return el; }
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function forEachEntries(obj, cb){ return Object.entries(obj).forEach(([ key, val ])=> cb(key, val)); }
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function isUndef(value){ return typeof value==="undefined"; }
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function setRemove(obj, prop, key, val){ return obj[ (isUndef(val) ? "remove" : "set") + prop ](key, val); }
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function setRemoveNS(obj, prop, key, val, ns= null){ return obj[ (isUndef(val) ? "remove" : "set") + prop + "NS" ](ns, key, val); }
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function setDelete(obj, prop, val){ return Reflect[ isUndef(val) ? "deleteProperty" : "set" ](obj, prop, val); }
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16
test/index.html
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16
test/index.html
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<!DOCTYPE html>
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<html class="no-js" lang="en">
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<head>
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<meta charset="utf-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1" />
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<!-- DEL CSP https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP | https://github.com/Prinzhorn/minimal-csp -->
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<!-- DEL https://github.com/jensimmons/cssremedy -->
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<link rel="stylesheet" href="https://github.com/jensimmons/cssremedy/raw/master/css/remedy.css">
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<title>Small DOM element creation enhancements</title>
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<meta name="description" content="Making creatig elements easier">
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<script src="index.js" type="module"></script>
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</head>
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<body>
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</body>
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</html>
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17
test/index.js
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17
test/index.js
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import { el, elNS, assign } from "../index.js";
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Object.assign(globalThis, { el, elNS, assign });
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console.log(el("p", { className: "red", textContent: "Hello "}));
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console.log(el("p", { className: "red", textContent: "Hello "}) instanceof HTMLParagraphElement);
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document.head.append(
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el("style", { textContent: `
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.red{ color: red; }
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` })
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)
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document.body.append(
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el("p", { className: "red" }).append(
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el("", { textContent: "Hello " }),
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el("strong", { textContent: "World" })
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)
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);
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