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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="Using not only events in UI declaratively."><title>`deka-dom-el` — Events and Addons</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` — Events and Addons</h1><p>Using not only events in UI declaratively.</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.">2. Elements</a><a href="p03-events" title="Using not only events in UI declaratively." class="current">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. Custom elements</a></nav><main><h2>Listenning to the native DOM events and other Addons</h2><p>We quickly introduce helper to listening to the native DOM events. And library syntax/pattern so-called <em>Addon</em> to incorporate not only this in UI templates declaratively.</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 { on, dispatchEvent } from "deka-dom-el";
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/** @type {ddeElementAddon} */
</code></div><h3 id="h-events-and-listenners"><!--<dde:mark type="component" name="h3" host="parentElement" ssr/>--><a href="#h-events-and-listenners" tabindex="-1">#</a> Events and listenners</h3><p>In JavaScript you can listen to the native DOM events of the given element by using <a href="https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener" title="addEventListener on MDN"><code>element.addEventListener(type, listener, options)</code></a>. The library provides an alternative (<code>on</code>) accepting the differen order of the arguments:</p><!--<dde:mark type="component" name="example" host="this" ssr/>--><div id="code-example-1-1wmddlo83w68" class="example"><!--<dde:mark type="component" name="code" host="parentElement" ssr/>--><code class="language-js">import { el, on } from "./esm-with-signals.js";
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const log= mark=&gt; console.log.bind(console, mark);
const button= el("button", "Test click");
button.addEventListener("click", log("`addEventListener`"), { once: true });
on("click", log("`on`"), { once: true })(button);
document.body.append(
button
);
</code></div><script>Flems(document.getElementById("code-example-1-1wmddlo83w68"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { el, on } from \\\"./esm-with-signals.js\\\";\\nconst log= mark=> console.log.bind(console, mark);\\n\\nconst button= el(\\\"button\\\", \\\"Test click\\\");\\nbutton.addEventListener(\\\"click\\\", log(\\\"`addEventListener`\\\"), { once: true });\\non(\\\"click\\\", log(\\\"`on`\\\"), { once: true })(button);\\n\\ndocument.body.append(\\n\\tbutton\\n);\\n\"},{\"name\":\"esm-with-signals.js\",\"content\":\"// src/signals-common.js\\nvar k = {\\n\\tisSignal(t) {\\n\\t\\treturn !1;\\n\\t},\\n\\tprocessReactiveAttribute(t, e, n, r) {\\n\\t\\treturn n;\\n\\t}\\n};\\nfunction B(t, e = !0) {\\n\\treturn e ? Object.assign(k, t) : (Object.setPrototypeOf(t, k), t);\\n}\\nfunction W(t) {\\n\\treturn k.isPrototypeOf(t) && t !== k ? t : k;\\n}\\n\\n// src/helpers.js\\nvar T = (...t) => Object.prototype.hasOwnProperty.call(...t);\\nfunction S(t) {\\n\\treturn typeof t > \\\"u\\\";\\n}\\nfunction X(t) {\\n\\tlet e = typeof t;\\n\\treturn e !== \\\"object\\\" ? e : t === null ? \\\"null\\\" : Object.prototype.toString.call(t);\\n}\\nfunction q(t, e) {\\n\\tif (!t || !(t instanceof AbortSignal))\\n\\t\\treturn !0;\\n\\tif (!t.aborted)\\n\\t\\treturn t.addEventListener(\\\"abort\\\", e), function() {\\n\\t\\t\\tt.removeEventListener(\\\"abort\\\", e);\\n\\t\\t};\\n}\\nfunction F(t, e) {\\n\\tlet { observedAttributes: n = [] } = t.constructor;\\n\\treturn n.reduce(function(r, o) {\\n\\t\\treturn r[pt(o)] = e(t, o), r;\\n\\t}, {});\\n}\\nfunction pt(t) {\\n\\treturn t.replace(/-./g, (e) => e[1].toUpperCase());\\n}\\n\\n// src/dom-common.js\\nvar d = {\\n\\tsetDeleteAttr: lt,\\n\\tssr: \\\"\\\",\\n\\tD: globalThis.document,\\n\\tF: globalThis.DocumentFragment,\\n\\tH: globalThis.HTMLElement,\\n\\tS: globalThis.SVGElement,\\n\\tM: globalThis.MutationObserver\\n};\\nfunction lt(t, e, n) {\\n\\tif (Reflect.set(t, e, n), !!S(n)) {\\n\\t\\tif (Reflect.deleteProperty(t, e), t instanceof d.H && t.getAttribute(e) === \\\"undefined\\\")\\n\\t\\t\\treturn t.removeAttribute(e);\\n\\t\\tif (Reflect.get(t, e) === \\\"undefined\\\")\\n\\t\\t\\treturn Reflect.set(t, e, \\\"\\\");\\n\\t}\\n}\\nvar C = \\\"__dde_lifecyclesToEvents\\\", _ = \\\"dde:connected\\\", O = \\\"dde:disconnected\\\", M = \\\"dde:attributeChanged\\\";\\n\\n// src/dom.js\\nvar A = [{\\n\\tget scope() {\\n\\t\\treturn d.D.body;\\n\\t},\\n\\thost: (t) => t ? t(d.D.body) : d.D.body,\\n\\tprevent: !0\\n}], m = {\\n\\tget current() {\\n\\t\\treturn A[A.length - 1];\\n\\t},\\n\\tget host() {\\n\\t\\treturn this.current.host;\\n\\t},\\n\\tpreventDefault() {\\n\\t\\tlet { current: t } = this;\\n\\t\\treturn t.prevent = !0, t;\\n\\t},\\n\\tget state() {\\n\\t\\treturn [...A];\\n\\t},\\n\\tpush(t = {}) {\\n\\t\\treturn A.push(Object.assign({}, this.current, { prevent: !1 }, t));\\n\\t},\\n\\tpushRoot() {\\n\\t\\treturn A.push(A[0]);\\n\\t},\\n\\tpop() {\\n\\t\\tif (A.length !== 1)\\n\\t\\t\\treturn A.pop();\\n\\t}\\n};\\nfunction Y(...t) {\\n\\treturn this.appendOriginal(...t), this;\\n}\\nfunction ht(t) {\\n\\treturn t.append === Y || (t.appendOriginal = t.append, t.append = Y), t;\\n}\\nvar $;\\nfunction j(t, e, ...n) {\\n\\tlet r = W(this), o = 0, c, i;\\n\\tswitch ((Object(e) !== e || r.isSignal(e)) && (e = { textContent: e }), !0) {\\n\\t\\tcase typeof t == \\\"function\\\": {\\n\\t\\t\\to = 1, m.push({ scope: t, host: (...v) => v.length ? (o === 1 ? n.unshift(...v) : v.forEach((l) => l(i)), void 0) : i }), c = t(e || void 0);\\n\\t\\t\\tlet a = c instanceof d.F;\\n\\t\\t\\tif (c.nodeName === \\\"#comment\\\")\\n\\t\\t\\t\\tbreak;\\n\\t\\t\\tlet h = j.mark({\\n\\t\\t\\t\\ttype: \\\"component\\\",\\n\\t\\t\\t\\tname: t.name,\\n\\t\\t\\t\\thost: a ? \\\"this\\\" : \\\"parentElement\\\"\\n\\t\\t\\t});\\n\\t\\t\\tc.prepend(h), a && (i = h);\\n\\t\\t\\tbreak;\\n\\t\\t}\\n\\t\\tcase t === \\\"#text\\\":\\n\\t\\t\\tc = P.call(this, d.D.createTextNode(\\\"\\\"), e);\\n\\t\\t\\tbreak;\\n\\t\\tcase (t === \\\"<>\\\" || !t):\\n\\t\\t\\tc = P.call(this, d
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const log= mark=&gt; console.log.bind(console, mark);
const abort_controller= new AbortController();
const { signal }= abort_controller;
const button= el("button", "Test click");
button.addEventListener("click", log("`addEventListener`"), { signal });
on("click", log("`on`"), { signal })(button);
document.body.append(
button, " ", el("button", { textContent: "Off", onclick: ()=&gt; abort_controller.abort() })
);
</code></div><script>Flems(document.getElementById("code-example-1-8r8qappf8mo"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { el, on } from \\\"./esm-with-signals.js\\\";\\nconst log= mark=> console.log.bind(console, mark);\\n\\nconst abort_controller= new AbortController();\\nconst { signal }= abort_controller;\\n\\nconst button= el(\\\"button\\\", \\\"Test click\\\");\\nbutton.addEventListener(\\\"click\\\", log(\\\"`addEventListener`\\\"), { signal });\\non(\\\"click\\\", log(\\\"`on`\\\"), { signal })(button);\\n\\ndocument.body.append(\\n\\tbutton, \\\" \\\", el(\\\"button\\\", { textContent: \\\"Off\\\", onclick: ()=> abort_controller.abort() })\\n);\\n\"},{\"name\":\"esm-with-signals.js\",\"content\":\"// src/signals-common.js\\nvar k = {\\n\\tisSignal(t) {\\n\\t\\treturn !1;\\n\\t},\\n\\tprocessReactiveAttribute(t, e, n, r) {\\n\\t\\treturn n;\\n\\t}\\n};\\nfunction B(t, e = !0) {\\n\\treturn e ? Object.assign(k, t) : (Object.setPrototypeOf(t, k), t);\\n}\\nfunction W(t) {\\n\\treturn k.isPrototypeOf(t) && t !== k ? t : k;\\n}\\n\\n// src/helpers.js\\nvar T = (...t) => Object.prototype.hasOwnProperty.call(...t);\\nfunction S(t) {\\n\\treturn typeof t > \\\"u\\\";\\n}\\nfunction X(t) {\\n\\tlet e = typeof t;\\n\\treturn e !== \\\"object\\\" ? e : t === null ? \\\"null\\\" : Object.prototype.toString.call(t);\\n}\\nfunction q(t, e) {\\n\\tif (!t || !(t instanceof AbortSignal))\\n\\t\\treturn !0;\\n\\tif (!t.aborted)\\n\\t\\treturn t.addEventListener(\\\"abort\\\", e), function() {\\n\\t\\t\\tt.removeEventListener(\\\"abort\\\", e);\\n\\t\\t};\\n}\\nfunction F(t, e) {\\n\\tlet { observedAttributes: n = [] } = t.constructor;\\n\\treturn n.reduce(function(r, o) {\\n\\t\\treturn r[pt(o)] = e(t, o), r;\\n\\t}, {});\\n}\\nfunction pt(t) {\\n\\treturn t.replace(/-./g, (e) => e[1].toUpperCase());\\n}\\n\\n// src/dom-common.js\\nvar d = {\\n\\tsetDeleteAttr: lt,\\n\\tssr: \\\"\\\",\\n\\tD: globalThis.document,\\n\\tF: globalThis.DocumentFragment,\\n\\tH: globalThis.HTMLElement,\\n\\tS: globalThis.SVGElement,\\n\\tM: globalThis.MutationObserver\\n};\\nfunction lt(t, e, n) {\\n\\tif (Reflect.set(t, e, n), !!S(n)) {\\n\\t\\tif (Reflect.deleteProperty(t, e), t instanceof d.H && t.getAttribute(e) === \\\"undefined\\\")\\n\\t\\t\\treturn t.removeAttribute(e);\\n\\t\\tif (Reflect.get(t, e) === \\\"undefined\\\")\\n\\t\\t\\treturn Reflect.set(t, e, \\\"\\\");\\n\\t}\\n}\\nvar C = \\\"__dde_lifecyclesToEvents\\\", _ = \\\"dde:connected\\\", O = \\\"dde:disconnected\\\", M = \\\"dde:attributeChanged\\\";\\n\\n// src/dom.js\\nvar A = [{\\n\\tget scope() {\\n\\t\\treturn d.D.body;\\n\\t},\\n\\thost: (t) => t ? t(d.D.body) : d.D.body,\\n\\tprevent: !0\\n}], m = {\\n\\tget current() {\\n\\t\\treturn A[A.length - 1];\\n\\t},\\n\\tget host() {\\n\\t\\treturn this.current.host;\\n\\t},\\n\\tpreventDefault() {\\n\\t\\tlet { current: t } = this;\\n\\t\\treturn t.prevent = !0, t;\\n\\t},\\n\\tget state() {\\n\\t\\treturn [...A];\\n\\t},\\n\\tpush(t = {}) {\\n\\t\\treturn A.push(Object.assign({}, this.current, { prevent: !1 }, t));\\n\\t},\\n\\tpushRoot() {\\n\\t\\treturn A.push(A[0]);\\n\\t},\\n\\tpop() {\\n\\t\\tif (A.length !== 1)\\n\\t\\t\\treturn A.pop();\\n\\t}\\n};\\nfunction Y(...t) {\\n\\treturn this.appendOriginal(...t), this;\\n}\\nfunction ht(t) {\\n\\treturn t.append === Y || (t.appendOriginal = t.append, t.append = Y), t;\\n}\\nvar $;\\nfunction j(t, e, ...n) {\\n\\tlet r = W(this), o = 0, c, i;\\n\\tswitch ((Object(e) !== e || r.isSignal(e)) && (e = { textContent: e }), !0) {\\n\\t\\tcase typeof t == \\\"function\\\": {\\n\\t\\t\\to = 1, m.push({ scope: t, host: (...v) => v.length ? (o === 1 ? n.unshift(...v) : v.forEach((l) => l(i)), void 0) : i }), c = t(e || void 0);\\n\\t\\t\\tlet a = c instanceof d.F;\\n\\t\\t\\tif (c.nodeName === \\\"#comment\\\")\\n\\t\\t\\t\\tbreak;\\n\\t\\t\\tlet h = j.mark({\\n\\t\\t\\t\\ttype: \\\"component\\\",\\n\\t\\t\\t\\tname: t.name,\\n\\t\\t\\t\\thost: a ? \\\"this\\\" : \\\"parentElement\\\"\\n\\t\\t\\t});\\n\\t\\t\\tc.prepend(h), a && (i = h);\\n\\t\\t\\tbreak;\\n\\t\\t}\
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const abort_controller= new AbortController();
const { signal }= abort_controller;
/** @type {ddeElementAddon&lt;HTMLButtonElement&gt;} */
const onclickOff= on("click", ()=&gt; abort_controller.abort(), { signal });
/** @type {(ref?: HTMLOutputElement)=&gt; HTMLOutputElement | null} */
const ref= (store=&gt; ref=&gt; ref ? (store= ref) : store)(null);
document.body.append(
el("button", "Test `on`",
on("click", console.log, { signal }),
on("click", update, { signal }),
on("mouseup", update, { signal })),
" ",
el("button", "Off", onclickOff),
el("output", { style: { display: "block", whiteSpace: "pre" } }, ref)
);
/** @param {MouseEvent} event @this {HTMLButtonElement} */
function update(event){
ref().append(
event.type,
"\n"
);
}
</code></div><script>Flems(document.getElementById("code-example-1-6jtsnxfqzm4"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { el, on } from \\\"./esm-with-signals.js\\\";\\nconst abort_controller= new AbortController();\\nconst { signal }= abort_controller;\\n/** @type {ddeElementAddon<HTMLButtonElement>} */\\nconst onclickOff= on(\\\"click\\\", ()=> abort_controller.abort(), { signal });\\n/** @type {(ref?: HTMLOutputElement)=> HTMLOutputElement | null} */\\nconst ref= (store=> ref=> ref ? (store= ref) : store)(null);\\n\\ndocument.body.append(\\n\\tel(\\\"button\\\", \\\"Test `on`\\\",\\n\\t\\ton(\\\"click\\\", console.log, { signal }),\\n\\t\\ton(\\\"click\\\", update, { signal }),\\n\\t\\ton(\\\"mouseup\\\", update, { signal })),\\n\\t\\\" \\\",\\n\\tel(\\\"button\\\", \\\"Off\\\", onclickOff),\\n\\tel(\\\"output\\\", { style: { display: \\\"block\\\", whiteSpace: \\\"pre\\\" } }, ref)\\n);\\n/** @param {MouseEvent} event @this {HTMLButtonElement} */\\nfunction update(event){\\n\\tref().append(\\n\\t\\tevent.type,\\n\\t\\t\\\"\\\\n\\\"\\n\\t);\\n}\\n\"},{\"name\":\"esm-with-signals.js\",\"content\":\"// src/signals-common.js\\nvar k = {\\n\\tisSignal(t) {\\n\\t\\treturn !1;\\n\\t},\\n\\tprocessReactiveAttribute(t, e, n, r) {\\n\\t\\treturn n;\\n\\t}\\n};\\nfunction B(t, e = !0) {\\n\\treturn e ? Object.assign(k, t) : (Object.setPrototypeOf(t, k), t);\\n}\\nfunction W(t) {\\n\\treturn k.isPrototypeOf(t) && t !== k ? t : k;\\n}\\n\\n// src/helpers.js\\nvar T = (...t) => Object.prototype.hasOwnProperty.call(...t);\\nfunction S(t) {\\n\\treturn typeof t > \\\"u\\\";\\n}\\nfunction X(t) {\\n\\tlet e = typeof t;\\n\\treturn e !== \\\"object\\\" ? e : t === null ? \\\"null\\\" : Object.prototype.toString.call(t);\\n}\\nfunction q(t, e) {\\n\\tif (!t || !(t instanceof AbortSignal))\\n\\t\\treturn !0;\\n\\tif (!t.aborted)\\n\\t\\treturn t.addEventListener(\\\"abort\\\", e), function() {\\n\\t\\t\\tt.removeEventListener(\\\"abort\\\", e);\\n\\t\\t};\\n}\\nfunction F(t, e) {\\n\\tlet { observedAttributes: n = [] } = t.constructor;\\n\\treturn n.reduce(function(r, o) {\\n\\t\\treturn r[pt(o)] = e(t, o), r;\\n\\t}, {});\\n}\\nfunction pt(t) {\\n\\treturn t.replace(/-./g, (e) => e[1].toUpperCase());\\n}\\n\\n// src/dom-common.js\\nvar d = {\\n\\tsetDeleteAttr: lt,\\n\\tssr: \\\"\\\",\\n\\tD: globalThis.document,\\n\\tF: globalThis.DocumentFragment,\\n\\tH: globalThis.HTMLElement,\\n\\tS: globalThis.SVGElement,\\n\\tM: globalThis.MutationObserver\\n};\\nfunction lt(t, e, n) {\\n\\tif (Reflect.set(t, e, n), !!S(n)) {\\n\\t\\tif (Reflect.deleteProperty(t, e), t instanceof d.H && t.getAttribute(e) === \\\"undefined\\\")\\n\\t\\t\\treturn t.removeAttribute(e);\\n\\t\\tif (Reflect.get(t, e) === \\\"undefined\\\")\\n\\t\\t\\treturn Reflect.set(t, e, \\\"\\\");\\n\\t}\\n}\\nvar C = \\\"__dde_lifecyclesToEvents\\\", _ = \\\"dde:connected\\\", O = \\\"dde:disconnected\\\", M = \\\"dde:attributeChanged\\\";\\n\\n// src/dom.js\\nvar A = [{\\n\\tget scope() {\\n\\t\\treturn d.D.body;\\n\\t},\\n\\thost: (t) => t ? t(d.D.body) : d.D.body,\\n\\tprevent: !0\\n}], m = {\\n\\tget current() {\\n\\t\\treturn A[A.length - 1];\\n\\t},\\n\\tget host() {\\n\\t\\treturn this.current.host;\\n\\t},\\n\\tpreventDefault() {\\n\\t\\tlet { current: t } = this;\\n\\t\\treturn t.prevent = !0, t;\\n\\t},\\n\\tget state() {\\n\\t\\treturn [...A];\\n\\t},\\n\\tpush(t = {}) {\\n\\t\\treturn A.push(Object.assign({}, this.current, { prevent: !1 }, t));\\n\\t},\\n\\tpushRoot() {\\n\\t\\treturn A.push(A[0]);\\n\\t},\\n\\tpop() {\\n\\t\\tif (A.length !== 1)\\n\\t\\t\\treturn A.pop();\\n\\t}\\n};\\nfunction Y(...t) {\\n\\treturn this.appendOriginal(...t), this;\\n}\\nfunction ht(t) {\\n\\treturn t.append === Y || (t.appendOriginal = t.append, t.append = Y), t;\\n}\\nvar $;\\nfunction j(t, e, ...n) {\\n\\tlet r = W(this), o = 0, c, i;\\n\\tswitch ((Object(e) !== e || r.isSignal(e)) && (e = { textContent: e }), !0) {\\n\\t\\tcase typeof t == \\\"function\\\": {\\n\\t\\t\\to = 1, m.push({ scope: t, host: (...v) => v.length ? (o === 1 ? n.unshift(...v) : v
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const paragraph= el("p", "See live-cycle events in console.",
el=&gt; log({ type: "dde:created", detail: el }),
on.connected(log),
on.disconnected(log),
on.attributeChanged(log));
document.body.append(
paragraph,
el("button", "Update attribute", on("click", ()=&gt; paragraph.setAttribute("test", Math.random().toString()))),
" ",
el("button", "Remove", on("click", ()=&gt; paragraph.remove()))
);
/** @param {Partial&lt;CustomEvent&gt;} event */
function log({ type, detail }){
console.log({ _this: this, type, detail });
}
</code></div><script>Flems(document.getElementById("code-example-1-35hjjp3e4js"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { el, on } from \\\"./esm-with-signals.js\\\";\\nconst paragraph= el(\\\"p\\\", \\\"See live-cycle events in console.\\\",\\n\\tel=> log({ type: \\\"dde:created\\\", detail: el }),\\n\\ton.connected(log),\\n\\ton.disconnected(log),\\n\\ton.attributeChanged(log));\\n\\ndocument.body.append(\\n\\tparagraph,\\n\\tel(\\\"button\\\", \\\"Update attribute\\\", on(\\\"click\\\", ()=> paragraph.setAttribute(\\\"test\\\", Math.random().toString()))),\\n\\t\\\" \\\",\\n\\tel(\\\"button\\\", \\\"Remove\\\", on(\\\"click\\\", ()=> paragraph.remove()))\\n);\\n\\n/** @param {Partial<CustomEvent>} event */\\nfunction log({ type, detail }){\\n\\tconsole.log({ _this: this, type, detail });\\n}\\n\"},{\"name\":\"esm-with-signals.js\",\"content\":\"// src/signals-common.js\\nvar k = {\\n\\tisSignal(t) {\\n\\t\\treturn !1;\\n\\t},\\n\\tprocessReactiveAttribute(t, e, n, r) {\\n\\t\\treturn n;\\n\\t}\\n};\\nfunction B(t, e = !0) {\\n\\treturn e ? Object.assign(k, t) : (Object.setPrototypeOf(t, k), t);\\n}\\nfunction W(t) {\\n\\treturn k.isPrototypeOf(t) && t !== k ? t : k;\\n}\\n\\n// src/helpers.js\\nvar T = (...t) => Object.prototype.hasOwnProperty.call(...t);\\nfunction S(t) {\\n\\treturn typeof t > \\\"u\\\";\\n}\\nfunction X(t) {\\n\\tlet e = typeof t;\\n\\treturn e !== \\\"object\\\" ? e : t === null ? \\\"null\\\" : Object.prototype.toString.call(t);\\n}\\nfunction q(t, e) {\\n\\tif (!t || !(t instanceof AbortSignal))\\n\\t\\treturn !0;\\n\\tif (!t.aborted)\\n\\t\\treturn t.addEventListener(\\\"abort\\\", e), function() {\\n\\t\\t\\tt.removeEventListener(\\\"abort\\\", e);\\n\\t\\t};\\n}\\nfunction F(t, e) {\\n\\tlet { observedAttributes: n = [] } = t.constructor;\\n\\treturn n.reduce(function(r, o) {\\n\\t\\treturn r[pt(o)] = e(t, o), r;\\n\\t}, {});\\n}\\nfunction pt(t) {\\n\\treturn t.replace(/-./g, (e) => e[1].toUpperCase());\\n}\\n\\n// src/dom-common.js\\nvar d = {\\n\\tsetDeleteAttr: lt,\\n\\tssr: \\\"\\\",\\n\\tD: globalThis.document,\\n\\tF: globalThis.DocumentFragment,\\n\\tH: globalThis.HTMLElement,\\n\\tS: globalThis.SVGElement,\\n\\tM: globalThis.MutationObserver\\n};\\nfunction lt(t, e, n) {\\n\\tif (Reflect.set(t, e, n), !!S(n)) {\\n\\t\\tif (Reflect.deleteProperty(t, e), t instanceof d.H && t.getAttribute(e) === \\\"undefined\\\")\\n\\t\\t\\treturn t.removeAttribute(e);\\n\\t\\tif (Reflect.get(t, e) === \\\"undefined\\\")\\n\\t\\t\\treturn Reflect.set(t, e, \\\"\\\");\\n\\t}\\n}\\nvar C = \\\"__dde_lifecyclesToEvents\\\", _ = \\\"dde:connected\\\", O = \\\"dde:disconnected\\\", M = \\\"dde:attributeChanged\\\";\\n\\n// src/dom.js\\nvar A = [{\\n\\tget scope() {\\n\\t\\treturn d.D.body;\\n\\t},\\n\\thost: (t) => t ? t(d.D.body) : d.D.body,\\n\\tprevent: !0\\n}], m = {\\n\\tget current() {\\n\\t\\treturn A[A.length - 1];\\n\\t},\\n\\tget host() {\\n\\t\\treturn this.current.host;\\n\\t},\\n\\tpreventDefault() {\\n\\t\\tlet { current: t } = this;\\n\\t\\treturn t.prevent = !0, t;\\n\\t},\\n\\tget state() {\\n\\t\\treturn [...A];\\n\\t},\\n\\tpush(t = {}) {\\n\\t\\treturn A.push(Object.assign({}, this.current, { prevent: !1 }, t));\\n\\t},\\n\\tpushRoot() {\\n\\t\\treturn A.push(A[0]);\\n\\t},\\n\\tpop() {\\n\\t\\tif (A.length !== 1)\\n\\t\\t\\treturn A.pop();\\n\\t}\\n};\\nfunction Y(...t) {\\n\\treturn this.appendOriginal(...t), this;\\n}\\nfunction ht(t) {\\n\\treturn t.append === Y || (t.appendOriginal = t.append, t.append = Y), t;\\n}\\nvar $;\\nfunction j(t, e, ...n) {\\n\\tlet r = W(this), o = 0, c, i;\\n\\tswitch ((Object(e) !== e || r.isSignal(e)) && (e = { textContent: e }), !0) {\\n\\t\\tcase typeof t == \\\"function\\\": {\\n\\t\\t\\to = 1, m.push({ scope: t, host: (...v) => v.length ? (o === 1 ? n.unshift(...v) : v.forEach((l) => l(i)), void 0) : i }), c = t(e || void 0);\\n\\t\\t\\tlet a = c instanceof d.F;\\n\\t\\t\\tif (c.nodeName === \\\"#comment\\\")\\n\\t\\t\\t\\tbreak;\\n\\t\\t\\tlet h = j.mark({\\n\\t\\t\\t\\ttype: \\\"component\\\",\\n\\t\\t\\t\\tname: t.name
2023-11-23 16:30:20 +01:00
document.body.append(
el("p", "Listenning to `test` event.", on("test", console.log)).append(
el("br"),
el("button", "native", on("click", native)),
" ",
el("button", "dde", on("click", dde)),
" ",
el("button", "dde with options", on("click", ddeOptions))
)
);
function native(){
this.dispatchEvent(
new CustomEvent("test",
{ bubbles: true, detail: "hi" }
)
);
}
function dde(){
dispatchEvent("test")(this.parentElement, "hi");
}
function ddeOptions(){
dispatchEvent("test", { bubbles: true })(this, "hi");
}
</code></div><script>Flems(document.getElementById("code-example-2-b6a1hbrxh7s"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { el, on, dispatchEvent } from \\\"./esm-with-signals.js\\\";\\ndocument.body.append(\\n\\tel(\\\"p\\\", \\\"Listenning to `test` event.\\\", on(\\\"test\\\", console.log)).append(\\n\\t\\tel(\\\"br\\\"),\\n\\t\\tel(\\\"button\\\", \\\"native\\\", on(\\\"click\\\", native)),\\n\\t\\t\\\" \\\",\\n\\t\\tel(\\\"button\\\", \\\"dde\\\", on(\\\"click\\\", dde)),\\n\\t\\t\\\" \\\",\\n\\t\\tel(\\\"button\\\", \\\"dde with options\\\", on(\\\"click\\\", ddeOptions))\\n\\t)\\n);\\nfunction native(){\\n\\tthis.dispatchEvent(\\n\\t\\tnew CustomEvent(\\\"test\\\",\\n\\t\\t\\t{ bubbles: true, detail: \\\"hi\\\" }\\n\\t\\t)\\n\\t);\\n}\\nfunction dde(){\\n\\tdispatchEvent(\\\"test\\\")(this.parentElement, \\\"hi\\\");\\n}\\nfunction ddeOptions(){\\n\\tdispatchEvent(\\\"test\\\", { bubbles: true })(this, \\\"hi\\\");\\n}\\n\"},{\"name\":\"esm-with-signals.js\",\"content\":\"// src/signals-common.js\\nvar k = {\\n\\tisSignal(t) {\\n\\t\\treturn !1;\\n\\t},\\n\\tprocessReactiveAttribute(t, e, n, r) {\\n\\t\\treturn n;\\n\\t}\\n};\\nfunction B(t, e = !0) {\\n\\treturn e ? Object.assign(k, t) : (Object.setPrototypeOf(t, k), t);\\n}\\nfunction W(t) {\\n\\treturn k.isPrototypeOf(t) && t !== k ? t : k;\\n}\\n\\n// src/helpers.js\\nvar T = (...t) => Object.prototype.hasOwnProperty.call(...t);\\nfunction S(t) {\\n\\treturn typeof t > \\\"u\\\";\\n}\\nfunction X(t) {\\n\\tlet e = typeof t;\\n\\treturn e !== \\\"object\\\" ? e : t === null ? \\\"null\\\" : Object.prototype.toString.call(t);\\n}\\nfunction q(t, e) {\\n\\tif (!t || !(t instanceof AbortSignal))\\n\\t\\treturn !0;\\n\\tif (!t.aborted)\\n\\t\\treturn t.addEventListener(\\\"abort\\\", e), function() {\\n\\t\\t\\tt.removeEventListener(\\\"abort\\\", e);\\n\\t\\t};\\n}\\nfunction F(t, e) {\\n\\tlet { observedAttributes: n = [] } = t.constructor;\\n\\treturn n.reduce(function(r, o) {\\n\\t\\treturn r[pt(o)] = e(t, o), r;\\n\\t}, {});\\n}\\nfunction pt(t) {\\n\\treturn t.replace(/-./g, (e) => e[1].toUpperCase());\\n}\\n\\n// src/dom-common.js\\nvar d = {\\n\\tsetDeleteAttr: lt,\\n\\tssr: \\\"\\\",\\n\\tD: globalThis.document,\\n\\tF: globalThis.DocumentFragment,\\n\\tH: globalThis.HTMLElement,\\n\\tS: globalThis.SVGElement,\\n\\tM: globalThis.MutationObserver\\n};\\nfunction lt(t, e, n) {\\n\\tif (Reflect.set(t, e, n), !!S(n)) {\\n\\t\\tif (Reflect.deleteProperty(t, e), t instanceof d.H && t.getAttribute(e) === \\\"undefined\\\")\\n\\t\\t\\treturn t.removeAttribute(e);\\n\\t\\tif (Reflect.get(t, e) === \\\"undefined\\\")\\n\\t\\t\\treturn Reflect.set(t, e, \\\"\\\");\\n\\t}\\n}\\nvar C = \\\"__dde_lifecyclesToEvents\\\", _ = \\\"dde:connected\\\", O = \\\"dde:disconnected\\\", M = \\\"dde:attributeChanged\\\";\\n\\n// src/dom.js\\nvar A = [{\\n\\tget scope() {\\n\\t\\treturn d.D.body;\\n\\t},\\n\\thost: (t) => t ? t(d.D.body) : d.D.body,\\n\\tprevent: !0\\n}], m = {\\n\\tget current() {\\n\\t\\treturn A[A.length - 1];\\n\\t},\\n\\tget host() {\\n\\t\\treturn this.current.host;\\n\\t},\\n\\tpreventDefault() {\\n\\t\\tlet { current: t } = this;\\n\\t\\treturn t.prevent = !0, t;\\n\\t},\\n\\tget state() {\\n\\t\\treturn [...A];\\n\\t},\\n\\tpush(t = {}) {\\n\\t\\treturn A.push(Object.assign({}, this.current, { prevent: !1 }, t));\\n\\t},\\n\\tpushRoot() {\\n\\t\\treturn A.push(A[0]);\\n\\t},\\n\\tpop() {\\n\\t\\tif (A.length !== 1)\\n\\t\\t\\treturn A.pop();\\n\\t}\\n};\\nfunction Y(...t) {\\n\\treturn this.appendOriginal(...t), this;\\n}\\nfunction ht(t) {\\n\\treturn t.append === Y || (t.appendOriginal = t.append, t.append = Y), t;\\n}\\nvar $;\\nfunction j(t, e, ...n) {\\n\\tlet r = W(this), o = 0, c, i;\\n\\tswitch ((Object(e) !== e || r.isSignal(e)) && (e = { textContent: e }), !0) {\\n\\t\\tcase typeof t == \\\"function\\\": {\\n\\t\\t\\to = 1, m.push({ scope: t, host: (...v) => v.length ? (o === 1 ? n.unshift(...v) : v.forEach((l) => l(i)), void 0) : i }), c = t(e || void 0);\\n\\t\\t\\tlet a = c instanceof d.F;\\n\\t\\t\\tif (c.nodeName ===