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<!DOCTYPE html><html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1"><meta name="description" content="Basic concepts of elements modifications and creations."><title>`deka-dom-el` — Elements</title><!--<dde:mark type="component" name="metaAuthor" host="this" ssr/>--><meta name="author" content="Jan Andrle"><link type="text/plain" rel="author" href="https://jaandrle.github.io/humans.txt"><meta name="generator" content="deka-dom-el"><!--<dde:mark type="component" name="metaTwitter" host="this" ssr/>--><meta name="twitter:card" content="summary_large_image"><meta name="twitter:url" content="https://github.com/jaandrle/deka-dom-el"><meta name="twitter:title" content="deka-dom-el"><meta name="twitter:description" content="A low-code library that simplifies the creation of native DOM elements/components using small wrappers and tweaks."><meta name="twitter:creator" content="@jaandrle"><!--<dde:mark type="component" name="metaFacebook" host="this" ssr/>--><meta name="og:url" content="https://github.com/jaandrle/deka-dom-el"><meta name="og:title" content="deka-dom-el"><meta name="og:description" content="A low-code library that simplifies the creation of native DOM elements/components using small wrappers and tweaks."><meta name="og:creator" content="@jaandrle"><script src="https://cdn.jsdelivr.net/npm/shiki@0.9" defer=""></script><script type="module" src="code.js.js"></script><script src="https://flems.io/flems.html" type="text/javascript" charset="utf-8"></script><link rel="stylesheet" href="global.css"></head><body><!--<dde:mark type="component" name="page" host="this" ssr/>--><!--<dde:mark type="component" name="simplePage" host="this" ssr/>--><!--<dde:mark type="component" name="header" host="this" ssr/>--><header><h1>`deka-dom-el` — Elements</h1><p>Basic concepts of elements modifications and creations.</p></header><nav><a href="https://github.com/jaandrle/deka-dom-el"><svg class="icon" viewBox="0 0 32 32"><!--<dde:mark type="component" name="iconGitHub" host="parentElement" ssr/>--><path d="M 16,0.395c -8.836,0 -16,7.163 -16,16c 0,7.069 4.585,13.067 10.942,15.182c 0.8,0.148 1.094,-0.347 1.094,-0.77c 0,-0.381 -0.015,-1.642 -0.022,-2.979c -4.452,0.968 -5.391,-1.888 -5.391,-1.888c -0.728,-1.849 -1.776,-2.341 -1.776,-2.341c -1.452,-0.993 0.11,-0.973 0.11,-0.973c 1.606,0.113 2.452,1.649 2.452,1.649c 1.427,2.446 3.743,1.739 4.656,1.33c 0.143,-1.034 0.558,-1.74 1.016,-2.14c -3.554,-0.404 -7.29,-1.777 -7.29,-7.907c 0,-1.747 0.625,-3.174 1.649,-4.295c -0.166,-0.403 -0.714,-2.03 0.155,-4.234c 0,0 1.344,-0.43 4.401,1.64c 1.276,-0.355 2.645,-0.532 4.005,-0.539c 1.359,0.006 2.729,0.184 4.008,0.539c 3.054,-2.07 4.395,-1.64 4.395,-1.64c 0.871,2.204 0.323,3.831 0.157,4.234c 1.026,1.12 1.647,2.548 1.647,4.295c 0,6.145 -3.743,7.498 -7.306,7.895c 0.574,0.497 1.085,1.47 1.085,2.963c 0,2.141 -0.019,3.864 -0.019,4.391c 0,0.426 0.288,0.925 1.099,0.768c 6.354,-2.118 10.933,-8.113 10.933,-15.18c 0,-8.837 -7.164,-16 -16,-16Z"></path></svg>GitHub</a><a href="./" title="Introducing a&nbsp;library.">1. Introduction</a><a href="p02-elements" title="Basic concepts of elements modifications and creations." class="current">2. Elements</a><a href="p03-events" title="Using not only events in UI declaratively.">3. Events and Addons</a><a href="p04-signals" title="Handling reactivity in UI via signals.">4. Signals and reactivity</a><a href="p05-scopes" title="Organizing UI into components">5. Scopes and components</a><a href="p06-customElement" title="Using custom elements in combinantion with DDE">6. Web Components</a></nav><main><h2>Native JavaScript DOM elements creations</h2><p>Lets go through all patterns we would like to use and what needs to be improved for better experience. </p><div class="code" data-js="todo"><!--<dde:mark type="component" name="code" host="parentElement" ssr/>--><code class="language-js">// use NPM or for example https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm.js
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import {
assign,
el, createElement,
elNS, createElementNS
} from "deka-dom-el";
el===createElement
elNS===createElementNS
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// “internal” utils
import {
assignAttribute,
classListDeclarative,
chainableAppend
} from "deka-dom-el";
</code></div><h3 id="h-creating-elements-with-custom-attributes"><!--<dde:mark type="component" name="h3" host="parentElement" ssr/>--><a href="#h-creating-elements-with-custom-attributes" tabindex="-1">#</a> Creating element(s) (with custom attributes)</h3><p>You can create a native DOM element by using the <a title="MDN documentation page for document.createElement()" href="https://developer.mozilla.org/en-US/docs/Web/API/Document/createElement"><code>document.createElement()</code></a>. It is also possible to provide a&nbsp;some attribute(s) declaratively using <code>Object.assign()</code>. More precisely, this way you can sets some <a title="MDN page about Interface Description Language" href="https://developer.mozilla.org/en-US/docs/Glossary/IDL"><abbr title="Interface Description Language">IDL</abbr></a> also known as a JavaScript property.</p><!--<dde:mark type="component" name="example" host="this" ssr/>--><div id="code-example-1-nkz9lcdhykg" class="example"><!--<dde:mark type="component" name="code" host="parentElement" ssr/>--><code class="language-js">document.body.append(
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document.createElement("div")
);
console.log(
"Emty div is generated inside &lt;body&gt;:",
document.body.innerHTML.includes("&lt;div&gt;&lt;/div&gt;")
);
document.body.append(
Object.assign(
document.createElement("p"),
{ textContent: "Elements text content.", style: "color: coral;" }
)
);
</code></div><script>Flems(document.getElementById("code-example-1-nkz9lcdhykg"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"document.body.append(\\n\\tdocument.createElement(\\\"div\\\")\\n);\\nconsole.log(\\n\\t\\\"Emty div is generated inside <body>:\\\",\\n\\tdocument.body.innerHTML.includes(\\\"<div></div>\\\")\\n);\\n\\ndocument.body.append(\\n\\tObject.assign(\\n\\t\\tdocument.createElement(\\\"p\\\"),\\n\\t\\t{ textContent: \\\"Elements text content.\\\", style: \\\"color: coral;\\\" }\\n\\t)\\n);\\n\"},{\"name\":\"esm-with-signals.js\",\"content\":\"// src/signals-common.js\\nvar signals_global = {\\n\\tisSignal(attributes) {\\n\\t\\treturn false;\\n\\t},\\n\\tprocessReactiveAttribute(obj, key, attr, set) {\\n\\t\\treturn attr;\\n\\t}\\n};\\nfunction registerReactivity(def, global = true) {\\n\\tif (global) return Object.assign(signals_global, def);\\n\\tObject.setPrototypeOf(def, signals_global);\\n\\treturn def;\\n}\\nfunction signals(_this) {\\n\\treturn signals_global.isPrototypeOf(_this) && _this !== signals_global ? _this : signals_global;\\n}\\n\\n// src/helpers.js\\nvar hasOwn = (...a) => Object.prototype.hasOwnProperty.call(...a);\\nfunction isUndef(value) {\\n\\treturn typeof value === \\\"undefined\\\";\\n}\\nfunction typeOf(v) {\\n\\tconst t = typeof v;\\n\\tif (t !== \\\"object\\\") return t;\\n\\tif (v === null) return \\\"null\\\";\\n\\treturn Object.prototype.toString.call(v);\\n}\\nfunction onAbort(signal2, listener) {\\n\\tif (!signal2 || !(signal2 instanceof AbortSignal))\\n\\t\\treturn true;\\n\\tif (signal2.aborted)\\n\\t\\treturn;\\n\\tsignal2.addEventListener(\\\"abort\\\", listener);\\n\\treturn function cleanUp() {\\n\\t\\tsignal2.removeEventListener(\\\"abort\\\", listener);\\n\\t};\\n}\\nfunction observedAttributes(instance, observedAttribute2) {\\n\\tconst { observedAttributes: observedAttributes3 = [] } = instance.constructor;\\n\\treturn observedAttributes3.reduce(function(out, name) {\\n\\t\\tout[kebabToCamel(name)] = observedAttribute2(instance, name);\\n\\t\\treturn out;\\n\\t}, {});\\n}\\nfunction kebabToCamel(name) {\\n\\treturn name.replace(/-./g, (x) => x[1].toUpperCase());\\n}\\n\\n// src/dom-common.js\\nvar enviroment = {\\n\\tsetDeleteAttr,\\n\\tssr: \\\"\\\",\\n\\tD: globalThis.document,\\n\\tF: globalThis.DocumentFragment,\\n\\tH: globalThis.HTMLElement,\\n\\tS: globalThis.SVGElement,\\n\\tM: globalThis.MutationObserver\\n};\\nfunction setDeleteAttr(obj, prop, val) {\\n\\tReflect.set(obj, prop, val);\\n\\tif (!isUndef(val)) return;\\n\\tReflect.deleteProperty(obj, prop);\\n\\tif (obj instanceof enviroment.H && obj.getAttribute(prop) === \\\"undefined\\\")\\n\\t\\treturn obj.removeAttribute(prop);\\n\\tif (Reflect.get(obj, prop) === \\\"undefined\\\")\\n\\t\\treturn Reflect.set(obj, prop, \\\"\\\");\\n}\\nvar keyLTE = \\\"__dde_lifecyclesToEvents\\\";\\nvar evc = \\\"dde:connected\\\";\\nvar evd = \\\"dde:disconnected\\\";\\nvar eva = \\\"dde:attributeChanged\\\";\\n\\n// src/dom.js\\nvar scopes = [{\\n\\tget scope() {\\n\\t\\treturn enviroment.D.body;\\n\\t},\\n\\thost: (c) => c ? c(enviroment.D.body) : enviroment.D.body,\\n\\tprevent: true\\n}];\\nvar scope = {\\n\\tget current() {\\n\\t\\treturn scopes[scopes.length - 1];\\n\\t},\\n\\tget host() {\\n\\t\\treturn this.current.host;\\n\\t},\\n\\tpreventDefault() {\\n\\t\\tconst { current } = this;\\n\\t\\tcurrent.prevent = true;\\n\\t\\treturn current;\\n\\t},\\n\\tget state() {\\n\\t\\treturn [...scopes];\\n\\t},\\n\\tpush(s = {}) {\\n\\t\\treturn scopes.push(Object.assign({}, this.current, { prevent: false }, s));\\n\\t},\\n\\tpushRoot() {\\n\\t\\treturn scopes.push(scopes[0]);\\n\\t},\\n\\tpop() {\\n\\t\\tif (scopes.length === 1) return;\\n\\t\\treturn scopes.pop();\\n\\t}\\n};\\nfunction append(...els) {\\n\\tthis.appendOriginal(...els);\\n\\treturn this;\\n}\\nfunction chainableAppend(el) {\\n\\tif (el.append === append) return el;\\n\\tel.appendOriginal = el.append;\\n\\tel.append = append;\\n\\treturn el;\\n}\\nvar namespace;\\nfunction createElement(tag, attributes, ...addons) {\\n\\tconst s = si
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const color= "lightcoral";
document.body.append(
el("p", { textContent: "Hello (first time)", style: { color } })
);
document.body.append(
assign(
document.createElement("p"),
{ textContent: "Hello (second time)", style: { color } }
)
);
</code></div><script>Flems(document.getElementById("code-example-1-13lyjukvr0yk"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { el, assign } from \\\"./esm-with-signals.js\\\";\\nconst color= \\\"lightcoral\\\";\\ndocument.body.append(\\n\\tel(\\\"p\\\", { textContent: \\\"Hello (first time)\\\", style: { color } })\\n);\\ndocument.body.append(\\n\\tassign(\\n\\t\\tdocument.createElement(\\\"p\\\"),\\n\\t\\t{ textContent: \\\"Hello (second time)\\\", style: { color } }\\n\\t)\\n);\\n\"},{\"name\":\"esm-with-signals.js\",\"content\":\"// src/signals-common.js\\nvar signals_global = {\\n\\tisSignal(attributes) {\\n\\t\\treturn false;\\n\\t},\\n\\tprocessReactiveAttribute(obj, key, attr, set) {\\n\\t\\treturn attr;\\n\\t}\\n};\\nfunction registerReactivity(def, global = true) {\\n\\tif (global) return Object.assign(signals_global, def);\\n\\tObject.setPrototypeOf(def, signals_global);\\n\\treturn def;\\n}\\nfunction signals(_this) {\\n\\treturn signals_global.isPrototypeOf(_this) && _this !== signals_global ? _this : signals_global;\\n}\\n\\n// src/helpers.js\\nvar hasOwn = (...a) => Object.prototype.hasOwnProperty.call(...a);\\nfunction isUndef(value) {\\n\\treturn typeof value === \\\"undefined\\\";\\n}\\nfunction typeOf(v) {\\n\\tconst t = typeof v;\\n\\tif (t !== \\\"object\\\") return t;\\n\\tif (v === null) return \\\"null\\\";\\n\\treturn Object.prototype.toString.call(v);\\n}\\nfunction onAbort(signal2, listener) {\\n\\tif (!signal2 || !(signal2 instanceof AbortSignal))\\n\\t\\treturn true;\\n\\tif (signal2.aborted)\\n\\t\\treturn;\\n\\tsignal2.addEventListener(\\\"abort\\\", listener);\\n\\treturn function cleanUp() {\\n\\t\\tsignal2.removeEventListener(\\\"abort\\\", listener);\\n\\t};\\n}\\nfunction observedAttributes(instance, observedAttribute2) {\\n\\tconst { observedAttributes: observedAttributes3 = [] } = instance.constructor;\\n\\treturn observedAttributes3.reduce(function(out, name) {\\n\\t\\tout[kebabToCamel(name)] = observedAttribute2(instance, name);\\n\\t\\treturn out;\\n\\t}, {});\\n}\\nfunction kebabToCamel(name) {\\n\\treturn name.replace(/-./g, (x) => x[1].toUpperCase());\\n}\\n\\n// src/dom-common.js\\nvar enviroment = {\\n\\tsetDeleteAttr,\\n\\tssr: \\\"\\\",\\n\\tD: globalThis.document,\\n\\tF: globalThis.DocumentFragment,\\n\\tH: globalThis.HTMLElement,\\n\\tS: globalThis.SVGElement,\\n\\tM: globalThis.MutationObserver\\n};\\nfunction setDeleteAttr(obj, prop, val) {\\n\\tReflect.set(obj, prop, val);\\n\\tif (!isUndef(val)) return;\\n\\tReflect.deleteProperty(obj, prop);\\n\\tif (obj instanceof enviroment.H && obj.getAttribute(prop) === \\\"undefined\\\")\\n\\t\\treturn obj.removeAttribute(prop);\\n\\tif (Reflect.get(obj, prop) === \\\"undefined\\\")\\n\\t\\treturn Reflect.set(obj, prop, \\\"\\\");\\n}\\nvar keyLTE = \\\"__dde_lifecyclesToEvents\\\";\\nvar evc = \\\"dde:connected\\\";\\nvar evd = \\\"dde:disconnected\\\";\\nvar eva = \\\"dde:attributeChanged\\\";\\n\\n// src/dom.js\\nvar scopes = [{\\n\\tget scope() {\\n\\t\\treturn enviroment.D.body;\\n\\t},\\n\\thost: (c) => c ? c(enviroment.D.body) : enviroment.D.body,\\n\\tprevent: true\\n}];\\nvar scope = {\\n\\tget current() {\\n\\t\\treturn scopes[scopes.length - 1];\\n\\t},\\n\\tget host() {\\n\\t\\treturn this.current.host;\\n\\t},\\n\\tpreventDefault() {\\n\\t\\tconst { current } = this;\\n\\t\\tcurrent.prevent = true;\\n\\t\\treturn current;\\n\\t},\\n\\tget state() {\\n\\t\\treturn [...scopes];\\n\\t},\\n\\tpush(s = {}) {\\n\\t\\treturn scopes.push(Object.assign({}, this.current, { prevent: false }, s));\\n\\t},\\n\\tpushRoot() {\\n\\t\\treturn scopes.push(scopes[0]);\\n\\t},\\n\\tpop() {\\n\\t\\tif (scopes.length === 1) return;\\n\\t\\treturn scopes.pop();\\n\\t}\\n};\\nfunction append(...els) {\\n\\tthis.appendOriginal(...els);\\n\\treturn this;\\n}\\nfunction chainableAppend(el) {\\n\\tif (el.append === append) return el;\\n\\tel.appendOriginal = el.append;\\n\\tel.append = append;\\n\\treturn el;\\n}\\nvar namespace;\\nfunction createElement(tag, attributes, ...addons) {\\n\\tconst s = signals(this);\\n\\tlet
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const paragraph= document.createElement("p");
assignAttribute(paragraph, "textContent", "Hello, world!");
assignAttribute(paragraph, "style", "color: red; font-weight: bold;");
assignAttribute(paragraph, "style", { color: "navy" });
assignAttribute(paragraph, "dataTest1", "v1");
assignAttribute(paragraph, "dataset", { test2: "v2" });
assign(paragraph, { //textContent and style see above
ariaLabel: "v1", //data* see above
ariaset: { role: "none" }, // dataset see above
"=onclick": "console.log(event)",
onmouseout: console.info,
".something": "something",
classList: {} //see below
});
classListDeclarative(paragraph, {
classAdd: true,
classRemove: false,
classAdd1: 1,
classRemove1: 0,
classToggle: -1
});
console.log(paragraph.outerHTML);
console.log("paragraph.something=", paragraph.something);
document.body.append(
paragraph
);
</code></div><script>Flems(document.getElementById("code-example-1-iro9ncxa4bc"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { assign, assignAttribute, classListDeclarative } from \\\"./esm-with-signals.js\\\";\\nconst paragraph= document.createElement(\\\"p\\\");\\n\\nassignAttribute(paragraph, \\\"textContent\\\", \\\"Hello, world!\\\");\\n\\nassignAttribute(paragraph, \\\"style\\\", \\\"color: red; font-weight: bold;\\\");\\nassignAttribute(paragraph, \\\"style\\\", { color: \\\"navy\\\" });\\n\\nassignAttribute(paragraph, \\\"dataTest1\\\", \\\"v1\\\");\\nassignAttribute(paragraph, \\\"dataset\\\", { test2: \\\"v2\\\" });\\n\\nassign(paragraph, { //textContent and style see above\\n\\tariaLabel: \\\"v1\\\", //data* see above\\n\\tariaset: { role: \\\"none\\\" }, // dataset see above\\n\\t\\\"=onclick\\\": \\\"console.log(event)\\\",\\n\\tonmouseout: console.info,\\n\\t\\\".something\\\": \\\"something\\\",\\n\\tclassList: {} //see below\\n});\\n\\nclassListDeclarative(paragraph, {\\n\\tclassAdd: true,\\n\\tclassRemove: false,\\n\\tclassAdd1: 1,\\n\\tclassRemove1: 0,\\n\\tclassToggle: -1\\n});\\n\\nconsole.log(paragraph.outerHTML);\\nconsole.log(\\\"paragraph.something=\\\", paragraph.something);\\ndocument.body.append(\\n\\tparagraph\\n);\\n\"},{\"name\":\"esm-with-signals.js\",\"content\":\"// src/signals-common.js\\nvar signals_global = {\\n\\tisSignal(attributes) {\\n\\t\\treturn false;\\n\\t},\\n\\tprocessReactiveAttribute(obj, key, attr, set) {\\n\\t\\treturn attr;\\n\\t}\\n};\\nfunction registerReactivity(def, global = true) {\\n\\tif (global) return Object.assign(signals_global, def);\\n\\tObject.setPrototypeOf(def, signals_global);\\n\\treturn def;\\n}\\nfunction signals(_this) {\\n\\treturn signals_global.isPrototypeOf(_this) && _this !== signals_global ? _this : signals_global;\\n}\\n\\n// src/helpers.js\\nvar hasOwn = (...a) => Object.prototype.hasOwnProperty.call(...a);\\nfunction isUndef(value) {\\n\\treturn typeof value === \\\"undefined\\\";\\n}\\nfunction typeOf(v) {\\n\\tconst t = typeof v;\\n\\tif (t !== \\\"object\\\") return t;\\n\\tif (v === null) return \\\"null\\\";\\n\\treturn Object.prototype.toString.call(v);\\n}\\nfunction onAbort(signal2, listener) {\\n\\tif (!signal2 || !(signal2 instanceof AbortSignal))\\n\\t\\treturn true;\\n\\tif (signal2.aborted)\\n\\t\\treturn;\\n\\tsignal2.addEventListener(\\\"abort\\\", listener);\\n\\treturn function cleanUp() {\\n\\t\\tsignal2.removeEventListener(\\\"abort\\\", listener);\\n\\t};\\n}\\nfunction observedAttributes(instance, observedAttribute2) {\\n\\tconst { observedAttributes: observedAttributes3 = [] } = instance.constructor;\\n\\treturn observedAttributes3.reduce(function(out, name) {\\n\\t\\tout[kebabToCamel(name)] = observedAttribute2(instance, name);\\n\\t\\treturn out;\\n\\t}, {});\\n}\\nfunction kebabToCamel(name) {\\n\\treturn name.replace(/-./g, (x) => x[1].toUpperCase());\\n}\\n\\n// src/dom-common.js\\nvar enviroment = {\\n\\tsetDeleteAttr,\\n\\tssr: \\\"\\\",\\n\\tD: globalThis.document,\\n\\tF: globalThis.DocumentFragment,\\n\\tH: globalThis.HTMLElement,\\n\\tS: globalThis.SVGElement,\\n\\tM: globalThis.MutationObserver\\n};\\nfunction setDeleteAttr(obj, prop, val) {\\n\\tReflect.set(obj, prop, val);\\n\\tif (!isUndef(val)) return;\\n\\tReflect.deleteProperty(obj, prop);\\n\\tif (obj instanceof enviroment.H && obj.getAttribute(prop) === \\\"undefined\\\")\\n\\t\\treturn obj.removeAttribute(prop);\\n\\tif (Reflect.get(obj, prop) === \\\"undefined\\\")\\n\\t\\treturn Reflect.set(obj, prop, \\\"\\\");\\n}\\nvar keyLTE = \\\"__dde_lifecyclesToEvents\\\";\\nvar evc = \\\"dde:connected\\\";\\nvar evd = \\\"dde:disconnected\\\";\\nvar eva = \\\"dde:attributeChanged\\\";\\n\\n// src/dom.js\\nvar scopes = [{\\n\\tget scope() {\\n\\t\\treturn enviroment.D.body;\\n\\t},\\n\\thost: (c) => c ? c(enviroment.D.body) : enviroment.D.body,\\n\\tprevent: true\\n}];\\nvar scope = {\\n\\tget current() {\\n\\t\\treturn scopes[scopes.length - 1];\\n\\t},\\n\\tget host() {\\n\\t\\treturn this.current.host;\\n\\t},\\n\\tpreventDefault()
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document.createElement("div"),
document.createElement("span"),
document.createElement("main")
);
console.log(document.body.innerHTML.includes("&lt;div&gt;&lt;/div&gt;&lt;span&gt;&lt;/span&gt;&lt;main&gt;&lt;/main&gt;"));
const template= document.createElement("main").append(
document.createElement("div"),
document.createElement("span"),
);
console.log(typeof template==="undefined");
</code></div><script>Flems(document.getElementById("code-example-1-b6a1hbrxh7s"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"document.body.append(\\n\\tdocument.createElement(\\\"div\\\"),\\n\\tdocument.createElement(\\\"span\\\"),\\n\\tdocument.createElement(\\\"main\\\")\\n);\\nconsole.log(document.body.innerHTML.includes(\\\"<div></div><span></span><main></main>\\\"));\\nconst template= document.createElement(\\\"main\\\").append(\\n\\tdocument.createElement(\\\"div\\\"),\\n\\tdocument.createElement(\\\"span\\\"),\\n);\\nconsole.log(typeof template===\\\"undefined\\\");\\n\"},{\"name\":\"esm-with-signals.js\",\"content\":\"// src/signals-common.js\\nvar signals_global = {\\n\\tisSignal(attributes) {\\n\\t\\treturn false;\\n\\t},\\n\\tprocessReactiveAttribute(obj, key, attr, set) {\\n\\t\\treturn attr;\\n\\t}\\n};\\nfunction registerReactivity(def, global = true) {\\n\\tif (global) return Object.assign(signals_global, def);\\n\\tObject.setPrototypeOf(def, signals_global);\\n\\treturn def;\\n}\\nfunction signals(_this) {\\n\\treturn signals_global.isPrototypeOf(_this) && _this !== signals_global ? _this : signals_global;\\n}\\n\\n// src/helpers.js\\nvar hasOwn = (...a) => Object.prototype.hasOwnProperty.call(...a);\\nfunction isUndef(value) {\\n\\treturn typeof value === \\\"undefined\\\";\\n}\\nfunction typeOf(v) {\\n\\tconst t = typeof v;\\n\\tif (t !== \\\"object\\\") return t;\\n\\tif (v === null) return \\\"null\\\";\\n\\treturn Object.prototype.toString.call(v);\\n}\\nfunction onAbort(signal2, listener) {\\n\\tif (!signal2 || !(signal2 instanceof AbortSignal))\\n\\t\\treturn true;\\n\\tif (signal2.aborted)\\n\\t\\treturn;\\n\\tsignal2.addEventListener(\\\"abort\\\", listener);\\n\\treturn function cleanUp() {\\n\\t\\tsignal2.removeEventListener(\\\"abort\\\", listener);\\n\\t};\\n}\\nfunction observedAttributes(instance, observedAttribute2) {\\n\\tconst { observedAttributes: observedAttributes3 = [] } = instance.constructor;\\n\\treturn observedAttributes3.reduce(function(out, name) {\\n\\t\\tout[kebabToCamel(name)] = observedAttribute2(instance, name);\\n\\t\\treturn out;\\n\\t}, {});\\n}\\nfunction kebabToCamel(name) {\\n\\treturn name.replace(/-./g, (x) => x[1].toUpperCase());\\n}\\n\\n// src/dom-common.js\\nvar enviroment = {\\n\\tsetDeleteAttr,\\n\\tssr: \\\"\\\",\\n\\tD: globalThis.document,\\n\\tF: globalThis.DocumentFragment,\\n\\tH: globalThis.HTMLElement,\\n\\tS: globalThis.SVGElement,\\n\\tM: globalThis.MutationObserver\\n};\\nfunction setDeleteAttr(obj, prop, val) {\\n\\tReflect.set(obj, prop, val);\\n\\tif (!isUndef(val)) return;\\n\\tReflect.deleteProperty(obj, prop);\\n\\tif (obj instanceof enviroment.H && obj.getAttribute(prop) === \\\"undefined\\\")\\n\\t\\treturn obj.removeAttribute(prop);\\n\\tif (Reflect.get(obj, prop) === \\\"undefined\\\")\\n\\t\\treturn Reflect.set(obj, prop, \\\"\\\");\\n}\\nvar keyLTE = \\\"__dde_lifecyclesToEvents\\\";\\nvar evc = \\\"dde:connected\\\";\\nvar evd = \\\"dde:disconnected\\\";\\nvar eva = \\\"dde:attributeChanged\\\";\\n\\n// src/dom.js\\nvar scopes = [{\\n\\tget scope() {\\n\\t\\treturn enviroment.D.body;\\n\\t},\\n\\thost: (c) => c ? c(enviroment.D.body) : enviroment.D.body,\\n\\tprevent: true\\n}];\\nvar scope = {\\n\\tget current() {\\n\\t\\treturn scopes[scopes.length - 1];\\n\\t},\\n\\tget host() {\\n\\t\\treturn this.current.host;\\n\\t},\\n\\tpreventDefault() {\\n\\t\\tconst { current } = this;\\n\\t\\tcurrent.prevent = true;\\n\\t\\treturn current;\\n\\t},\\n\\tget state() {\\n\\t\\treturn [...scopes];\\n\\t},\\n\\tpush(s = {}) {\\n\\t\\treturn scopes.push(Object.assign({}, this.current, { prevent: false }, s));\\n\\t},\\n\\tpushRoot() {\\n\\t\\treturn scopes.push(scopes[0]);\\n\\t},\\n\\tpop() {\\n\\t\\tif (scopes.length === 1) return;\\n\\t\\treturn scopes.pop();\\n\\t}\\n};\\nfunction append(...els) {\\n\\tthis.appendOriginal(...els);\\n\\treturn this;\\n}\\nfunction chainableAppend(el) {\\n\\tif (el.append === append) return el;\\n\\tel.appendOriginal = el.append;\\n\\tel.append = append;\\n\\treturn el;\\n}\\nvar namespace;\\nfunc
2023-11-23 16:30:20 +01:00
document.head.append(
el("style").append(
"tr, td{ border: 1px solid red; padding: 1em; }",
"table{ border-collapse: collapse; }"
)
);
document.body.append(
el("p", "Example of a&nbsp;complex template. Using for example nesting lists:"),
el("ul").append(
el("li", "List item 1"),
el("li").append(
el("ul").append(
el("li", "Nested list item 1"),
)
)
),
el("table").append(
el("tr").append(
el("td", "Row 1 Col 1"),
el("td", "Row 1 Col 2")
)
)
);
import { chainableAppend } from "./esm-with-signals.js";
2023-11-23 16:30:20 +01:00
/** @param {keyof HTMLElementTagNameMap} tag */
const createElement= tag=&gt; chainableAppend(document.createElement(tag));
document.body.append(
createElement("p").append(
createElement("em").append(
"You can also use `chainableAppend`!"
)
)
);
</code></div><script>Flems(document.getElementById("code-example-2-iro9ncxa4bc"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { el } from \\\"./esm-with-signals.js\\\";\\ndocument.head.append(\\n\\tel(\\\"style\\\").append(\\n\\t\\t\\\"tr, td{ border: 1px solid red; padding: 1em; }\\\",\\n\\t\\t\\\"table{ border-collapse: collapse; }\\\"\\n\\t)\\n);\\ndocument.body.append(\\n\\tel(\\\"p\\\", \\\"Example of a complex template. Using for example nesting lists:\\\"),\\n\\tel(\\\"ul\\\").append(\\n\\t\\tel(\\\"li\\\", \\\"List item 1\\\"),\\n\\t\\tel(\\\"li\\\").append(\\n\\t\\t\\tel(\\\"ul\\\").append(\\n\\t\\t\\t\\tel(\\\"li\\\", \\\"Nested list item 1\\\"),\\n\\t\\t\\t)\\n\\t\\t)\\n\\t),\\n\\tel(\\\"table\\\").append(\\n\\t\\tel(\\\"tr\\\").append(\\n\\t\\t\\tel(\\\"td\\\", \\\"Row 1 Col 1\\\"),\\n\\t\\t\\tel(\\\"td\\\", \\\"Row 1 Col 2\\\")\\n\\t\\t)\\n\\t)\\n);\\n\\nimport { chainableAppend } from \\\"./esm-with-signals.js\\\";\\n/** @param {keyof HTMLElementTagNameMap} tag */\\nconst createElement= tag=> chainableAppend(document.createElement(tag));\\ndocument.body.append(\\n\\tcreateElement(\\\"p\\\").append(\\n\\t\\tcreateElement(\\\"em\\\").append(\\n\\t\\t\\t\\\"You can also use `chainableAppend`!\\\"\\n\\t\\t)\\n\\t)\\n);\\n\"},{\"name\":\"esm-with-signals.js\",\"content\":\"// src/signals-common.js\\nvar signals_global = {\\n\\tisSignal(attributes) {\\n\\t\\treturn false;\\n\\t},\\n\\tprocessReactiveAttribute(obj, key, attr, set) {\\n\\t\\treturn attr;\\n\\t}\\n};\\nfunction registerReactivity(def, global = true) {\\n\\tif (global) return Object.assign(signals_global, def);\\n\\tObject.setPrototypeOf(def, signals_global);\\n\\treturn def;\\n}\\nfunction signals(_this) {\\n\\treturn signals_global.isPrototypeOf(_this) && _this !== signals_global ? _this : signals_global;\\n}\\n\\n// src/helpers.js\\nvar hasOwn = (...a) => Object.prototype.hasOwnProperty.call(...a);\\nfunction isUndef(value) {\\n\\treturn typeof value === \\\"undefined\\\";\\n}\\nfunction typeOf(v) {\\n\\tconst t = typeof v;\\n\\tif (t !== \\\"object\\\") return t;\\n\\tif (v === null) return \\\"null\\\";\\n\\treturn Object.prototype.toString.call(v);\\n}\\nfunction onAbort(signal2, listener) {\\n\\tif (!signal2 || !(signal2 instanceof AbortSignal))\\n\\t\\treturn true;\\n\\tif (signal2.aborted)\\n\\t\\treturn;\\n\\tsignal2.addEventListener(\\\"abort\\\", listener);\\n\\treturn function cleanUp() {\\n\\t\\tsignal2.removeEventListener(\\\"abort\\\", listener);\\n\\t};\\n}\\nfunction observedAttributes(instance, observedAttribute2) {\\n\\tconst { observedAttributes: observedAttributes3 = [] } = instance.constructor;\\n\\treturn observedAttributes3.reduce(function(out, name) {\\n\\t\\tout[kebabToCamel(name)] = observedAttribute2(instance, name);\\n\\t\\treturn out;\\n\\t}, {});\\n}\\nfunction kebabToCamel(name) {\\n\\treturn name.replace(/-./g, (x) => x[1].toUpperCase());\\n}\\n\\n// src/dom-common.js\\nvar enviroment = {\\n\\tsetDeleteAttr,\\n\\tssr: \\\"\\\",\\n\\tD: globalThis.document,\\n\\tF: globalThis.DocumentFragment,\\n\\tH: globalThis.HTMLElement,\\n\\tS: globalThis.SVGElement,\\n\\tM: globalThis.MutationObserver\\n};\\nfunction setDeleteAttr(obj, prop, val) {\\n\\tReflect.set(obj, prop, val);\\n\\tif (!isUndef(val)) return;\\n\\tReflect.deleteProperty(obj, prop);\\n\\tif (obj instanceof enviroment.H && obj.getAttribute(prop) === \\\"undefined\\\")\\n\\t\\treturn obj.removeAttribute(prop);\\n\\tif (Reflect.get(obj, prop) === \\\"undefined\\\")\\n\\t\\treturn Reflect.set(obj, prop, \\\"\\\");\\n}\\nvar keyLTE = \\\"__dde_lifecyclesToEvents\\\";\\nvar evc = \\\"dde:connected\\\";\\nvar evd = \\\"dde:disconnected\\\";\\nvar eva = \\\"dde:attributeChanged\\\";\\n\\n// src/dom.js\\nvar scopes = [{\\n\\tget scope() {\\n\\t\\treturn enviroment.D.body;\\n\\t},\\n\\thost: (c) => c ? c(enviroment.D.body) : enviroment.D.body,\\n\\tprevent: true\\n}];\\nvar scope = {\\n\\tget current() {\\n\\t\\treturn scopes[scopes.length - 1];\\n\\t},\\n\\tget host() {\\n\\t\\treturn this.current.host;\\n\\t},\\n\\tpreventDefault() {\\n\\
2023-11-23 16:30:20 +01:00
document.head.append(
el("style").append(
".class1{ font-weight: bold; }",
".class2{ color: purple; }"
)
);
document.body.append(
el(component, { className: "class2", textContent: "Hello World!" }),
component({ className: "class2", textContent: "Hello World!" })
);
function component({ className, textContent }){
return el("div", { className: [ "class1", className ] }).append(
el("p", textContent)
);
}
</code></div><script>Flems(document.getElementById("code-example-1-320zz4y072o"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { el } from \\\"./esm-with-signals.js\\\";\\ndocument.head.append(\\n\\tel(\\\"style\\\").append(\\n\\t\\t\\\".class1{ font-weight: bold; }\\\",\\n\\t\\t\\\".class2{ color: purple; }\\\"\\n\\t)\\n);\\ndocument.body.append(\\n\\tel(component, { className: \\\"class2\\\", textContent: \\\"Hello World!\\\" }),\\n\\tcomponent({ className: \\\"class2\\\", textContent: \\\"Hello World!\\\" })\\n);\\n\\nfunction component({ className, textContent }){\\n\\treturn el(\\\"div\\\", { className: [ \\\"class1\\\", className ] }).append(\\n\\t\\tel(\\\"p\\\", textContent)\\n\\t);\\n}\\n\"},{\"name\":\"esm-with-signals.js\",\"content\":\"// src/signals-common.js\\nvar signals_global = {\\n\\tisSignal(attributes) {\\n\\t\\treturn false;\\n\\t},\\n\\tprocessReactiveAttribute(obj, key, attr, set) {\\n\\t\\treturn attr;\\n\\t}\\n};\\nfunction registerReactivity(def, global = true) {\\n\\tif (global) return Object.assign(signals_global, def);\\n\\tObject.setPrototypeOf(def, signals_global);\\n\\treturn def;\\n}\\nfunction signals(_this) {\\n\\treturn signals_global.isPrototypeOf(_this) && _this !== signals_global ? _this : signals_global;\\n}\\n\\n// src/helpers.js\\nvar hasOwn = (...a) => Object.prototype.hasOwnProperty.call(...a);\\nfunction isUndef(value) {\\n\\treturn typeof value === \\\"undefined\\\";\\n}\\nfunction typeOf(v) {\\n\\tconst t = typeof v;\\n\\tif (t !== \\\"object\\\") return t;\\n\\tif (v === null) return \\\"null\\\";\\n\\treturn Object.prototype.toString.call(v);\\n}\\nfunction onAbort(signal2, listener) {\\n\\tif (!signal2 || !(signal2 instanceof AbortSignal))\\n\\t\\treturn true;\\n\\tif (signal2.aborted)\\n\\t\\treturn;\\n\\tsignal2.addEventListener(\\\"abort\\\", listener);\\n\\treturn function cleanUp() {\\n\\t\\tsignal2.removeEventListener(\\\"abort\\\", listener);\\n\\t};\\n}\\nfunction observedAttributes(instance, observedAttribute2) {\\n\\tconst { observedAttributes: observedAttributes3 = [] } = instance.constructor;\\n\\treturn observedAttributes3.reduce(function(out, name) {\\n\\t\\tout[kebabToCamel(name)] = observedAttribute2(instance, name);\\n\\t\\treturn out;\\n\\t}, {});\\n}\\nfunction kebabToCamel(name) {\\n\\treturn name.replace(/-./g, (x) => x[1].toUpperCase());\\n}\\n\\n// src/dom-common.js\\nvar enviroment = {\\n\\tsetDeleteAttr,\\n\\tssr: \\\"\\\",\\n\\tD: globalThis.document,\\n\\tF: globalThis.DocumentFragment,\\n\\tH: globalThis.HTMLElement,\\n\\tS: globalThis.SVGElement,\\n\\tM: globalThis.MutationObserver\\n};\\nfunction setDeleteAttr(obj, prop, val) {\\n\\tReflect.set(obj, prop, val);\\n\\tif (!isUndef(val)) return;\\n\\tReflect.deleteProperty(obj, prop);\\n\\tif (obj instanceof enviroment.H && obj.getAttribute(prop) === \\\"undefined\\\")\\n\\t\\treturn obj.removeAttribute(prop);\\n\\tif (Reflect.get(obj, prop) === \\\"undefined\\\")\\n\\t\\treturn Reflect.set(obj, prop, \\\"\\\");\\n}\\nvar keyLTE = \\\"__dde_lifecyclesToEvents\\\";\\nvar evc = \\\"dde:connected\\\";\\nvar evd = \\\"dde:disconnected\\\";\\nvar eva = \\\"dde:attributeChanged\\\";\\n\\n// src/dom.js\\nvar scopes = [{\\n\\tget scope() {\\n\\t\\treturn enviroment.D.body;\\n\\t},\\n\\thost: (c) => c ? c(enviroment.D.body) : enviroment.D.body,\\n\\tprevent: true\\n}];\\nvar scope = {\\n\\tget current() {\\n\\t\\treturn scopes[scopes.length - 1];\\n\\t},\\n\\tget host() {\\n\\t\\treturn this.current.host;\\n\\t},\\n\\tpreventDefault() {\\n\\t\\tconst { current } = this;\\n\\t\\tcurrent.prevent = true;\\n\\t\\treturn current;\\n\\t},\\n\\tget state() {\\n\\t\\treturn [...scopes];\\n\\t},\\n\\tpush(s = {}) {\\n\\t\\treturn scopes.push(Object.assign({}, this.current, { prevent: false }, s));\\n\\t},\\n\\tpushRoot() {\\n\\t\\treturn scopes.push(scopes[0]);\\n\\t},\\n\\tpop() {\\n\\t\\tif (scopes.length === 1) return;\\n\\t\\treturn scopes.pop();\\n\\t}\\n};\\nfunction append(...els) {\\n\\tthis.appendOriginal(...els);\\n\\treturn this;\\n}\\nfunction chainableAppend(el) {\\n\\tif (el.appen
2023-11-23 16:30:20 +01:00
const elSVG= elNS("http://www.w3.org/2000/svg");
const elMath= elNS("http://www.w3.org/1998/Math/MathML");
document.body.append(
elSVG("svg"), // see https://developer.mozilla.org/en-US/docs/Web/SVG and https://developer.mozilla.org/en-US/docs/Web/API/SVGElement
elMath("math") // see https://developer.mozilla.org/en-US/docs/Web/MathML and https://developer.mozilla.org/en-US/docs/Web/MathML/Global_attributes
);
console.log(
document.body.innerHTML.includes("&lt;svg&gt;&lt;/svg&gt;&lt;math&gt;&lt;/math&gt;")
)
</code></div><script>Flems(document.getElementById("code-example-1-bcjydb50gdc"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { elNS, assign } from \\\"./esm-with-signals.js\\\";\\nconst elSVG= elNS(\\\"http://www.w3.org/2000/svg\\\");\\nconst elMath= elNS(\\\"http://www.w3.org/1998/Math/MathML\\\");\\ndocument.body.append(\\n\\telSVG(\\\"svg\\\"), // see https://developer.mozilla.org/en-US/docs/Web/SVG and https://developer.mozilla.org/en-US/docs/Web/API/SVGElement\\n\\telMath(\\\"math\\\") // see https://developer.mozilla.org/en-US/docs/Web/MathML and https://developer.mozilla.org/en-US/docs/Web/MathML/Global_attributes\\n);\\n\\nconsole.log(\\n\\tdocument.body.innerHTML.includes(\\\"<svg></svg><math></math>\\\")\\n)\\n\"},{\"name\":\"esm-with-signals.js\",\"content\":\"// src/signals-common.js\\nvar signals_global = {\\n\\tisSignal(attributes) {\\n\\t\\treturn false;\\n\\t},\\n\\tprocessReactiveAttribute(obj, key, attr, set) {\\n\\t\\treturn attr;\\n\\t}\\n};\\nfunction registerReactivity(def, global = true) {\\n\\tif (global) return Object.assign(signals_global, def);\\n\\tObject.setPrototypeOf(def, signals_global);\\n\\treturn def;\\n}\\nfunction signals(_this) {\\n\\treturn signals_global.isPrototypeOf(_this) && _this !== signals_global ? _this : signals_global;\\n}\\n\\n// src/helpers.js\\nvar hasOwn = (...a) => Object.prototype.hasOwnProperty.call(...a);\\nfunction isUndef(value) {\\n\\treturn typeof value === \\\"undefined\\\";\\n}\\nfunction typeOf(v) {\\n\\tconst t = typeof v;\\n\\tif (t !== \\\"object\\\") return t;\\n\\tif (v === null) return \\\"null\\\";\\n\\treturn Object.prototype.toString.call(v);\\n}\\nfunction onAbort(signal2, listener) {\\n\\tif (!signal2 || !(signal2 instanceof AbortSignal))\\n\\t\\treturn true;\\n\\tif (signal2.aborted)\\n\\t\\treturn;\\n\\tsignal2.addEventListener(\\\"abort\\\", listener);\\n\\treturn function cleanUp() {\\n\\t\\tsignal2.removeEventListener(\\\"abort\\\", listener);\\n\\t};\\n}\\nfunction observedAttributes(instance, observedAttribute2) {\\n\\tconst { observedAttributes: observedAttributes3 = [] } = instance.constructor;\\n\\treturn observedAttributes3.reduce(function(out, name) {\\n\\t\\tout[kebabToCamel(name)] = observedAttribute2(instance, name);\\n\\t\\treturn out;\\n\\t}, {});\\n}\\nfunction kebabToCamel(name) {\\n\\treturn name.replace(/-./g, (x) => x[1].toUpperCase());\\n}\\n\\n// src/dom-common.js\\nvar enviroment = {\\n\\tsetDeleteAttr,\\n\\tssr: \\\"\\\",\\n\\tD: globalThis.document,\\n\\tF: globalThis.DocumentFragment,\\n\\tH: globalThis.HTMLElement,\\n\\tS: globalThis.SVGElement,\\n\\tM: globalThis.MutationObserver\\n};\\nfunction setDeleteAttr(obj, prop, val) {\\n\\tReflect.set(obj, prop, val);\\n\\tif (!isUndef(val)) return;\\n\\tReflect.deleteProperty(obj, prop);\\n\\tif (obj instanceof enviroment.H && obj.getAttribute(prop) === \\\"undefined\\\")\\n\\t\\treturn obj.removeAttribute(prop);\\n\\tif (Reflect.get(obj, prop) === \\\"undefined\\\")\\n\\t\\treturn Reflect.set(obj, prop, \\\"\\\");\\n}\\nvar keyLTE = \\\"__dde_lifecyclesToEvents\\\";\\nvar evc = \\\"dde:connected\\\";\\nvar evd = \\\"dde:disconnected\\\";\\nvar eva = \\\"dde:attributeChanged\\\";\\n\\n// src/dom.js\\nvar scopes = [{\\n\\tget scope() {\\n\\t\\treturn enviroment.D.body;\\n\\t},\\n\\thost: (c) => c ? c(enviroment.D.body) : enviroment.D.body,\\n\\tprevent: true\\n}];\\nvar scope = {\\n\\tget current() {\\n\\t\\treturn scopes[scopes.length - 1];\\n\\t},\\n\\tget host() {\\n\\t\\treturn this.current.host;\\n\\t},\\n\\tpreventDefault() {\\n\\t\\tconst { current } = this;\\n\\t\\tcurrent.prevent = true;\\n\\t\\treturn current;\\n\\t},\\n\\tget state() {\\n\\t\\treturn [...scopes];\\n\\t},\\n\\tpush(s = {}) {\\n\\t\\treturn scopes.push(Object.assign({}, this.current, { prevent: false }, s));\\n\\t},\\n\\tpushRoot() {\\n\\t\\treturn scopes.push(scopes[0]);\\n\\t},\\n\\tpop() {\\n\\t\\tif (scopes.length === 1) return;\\n\\t\\treturn scopes.pop();\\n\\t}\\n};\\nfunction append(...els) {\\n\\tthis.appendOriginal(...els);\\n\\treturn this;\\n}\\nfunction chainableAppe