1
0
mirror of https://github.com/jaandrle/deka-dom-el synced 2024-11-25 01:39:37 +01:00
deka-dom-el/docs/p02-elements.html

147 lines
22 KiB
HTML
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<!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" 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-observables" title="Handling reactivity in UI via observables.">4. Observables 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>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
import {
assign,
el, createElement,
elNS, createElementNS
} from "deka-dom-el";
el===createElement
elNS===createElementNS
// “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 href="https://developer.mozilla.org/en-US/docs/Web/API/Document/createElement" title="MDN documentation for 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 href="https://developer.mozilla.org/en-US/docs/Glossary/IDL" title="MDN page about Interface Description Language"><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(
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\"}],\"toolbar\":false}"));</script><p>To make this easier, you can use the <code>el</code> function. Internally in basic examples, it is wrapper around <code>assign(document.createElement(…), { … })</code>.</p><!--<dde:mark type="component" name="example" host="this" ssr/>--><div id="code-example-1-13lyjukvr0yk" class="example"><!--<dde:mark type="component" name="code" host="parentElement" ssr/>--><code class="language-js">import { el, assign } from "https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-observables.js";
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 \\\"https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-observables.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\"}],\"toolbar\":false}"));</script><p>The <code>assign</code> function provides improved behaviour of <code>Object.assign()</code>. You can declaratively sets any IDL and attribute of the given element. Function prefers IDL and fallback to the <code>element.setAttribute</code> if there is no writable property in the element prototype.</p><p>You can study all JavaScript elements interfaces to the corresponding HTML elements. All HTML elements inherits from <a href="https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement">HTMLElement</a>. To see all available IDLs for example for paragraphs, see <a href="https://developer.mozilla.org/en-US/docs/Web/API/HTMLParagraphElement">HTMLParagraphElement</a>. Moreover, the <code>assign</code> provides a&nbsp;way to sets declaratively some convenient properties:</p><ul><li>It is possible to sets <code>data-*</code>/<code>aria-*</code> attributes using object notation.</li><li>In opposite, it is also possible to sets <code>data-*</code>/<code>aria-*</code> attribute using camelCase notation.</li><li>You can use string or object as a&nbsp;value for <code>style</code> property.</li><li><code>className</code> (IDL preffered)/<code>class</code> are ways to add CSS class to the element. You can use string (similarly to <code>class="…"</code> syntax in HTML) or array of strings. This is handy to concat conditional classes.</li><li>Use <code>classList</code> to toggle specific classes. This will be handy later when the reactivity via observables is beeing introduced.</li><li>The <code>assign</code> also accepts the <code>undefined</code> as a&nbsp;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. <em>For example, natievly the elements <code>id</code> is removed by setting the IDL to an empty string.</em></li><li>You can use <code>=</code> or <code>.</code> to force processing given key as attribute/property of the element.</li></ul><p>For processing, the <code>assign</code> internally uses <code>assignAttribute</code> and <code>classListDeclarative</code>.</p><!--<dde:mark type="component" name="example" host="this" ssr/>--><div id="code-example-1-iro9ncxa4bc" class="example"><!--<dde:mark type="component" name="code" host="parentElement" ssr/>--><code class="language-js">import { assign, assignAttribute, classListDeclarative } from "https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-observables.js";
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 \\\"https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-observables.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\"}],\"toolbar\":false}"));</script><h3 id="h-native-javascript-templating"><!--<dde:mark type="component" name="h3" host="parentElement" ssr/>--><a href="#h-native-javascript-templating" tabindex="-1">#</a> Native JavaScript templating</h3><p>By default, the native JS has no good way to define HTML template using DOM API:</p><!--<dde:mark type="component" name="example" host="this" ssr/>--><div id="code-example-1-b6a1hbrxh7s" class="example"><!--<dde:mark type="component" name="code" host="parentElement" ssr/>--><code class="language-js">document.body.append(
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\"}],\"toolbar\":false}"));</script><p>This library therefore overwrites the <code>append</code> method of created elements to always return parent element.</p><!--<dde:mark type="component" name="example" host="this" ssr/>--><div id="code-example-2-iro9ncxa4bc" class="example"><!--<dde:mark type="component" name="code" host="parentElement" ssr/>--><code class="language-js">import { el } from "https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-observables.js";
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 "https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-observables.js";
/** @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 \\\"https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-observables.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 \\\"https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-observables.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\"}],\"toolbar\":false}"));</script><h3 id="h-basic-state-less-components"><!--<dde:mark type="component" name="h3" host="parentElement" ssr/>--><a href="#h-basic-state-less-components" tabindex="-1">#</a> Basic (state-less) components</h3><p>You can use functions for encapsulation (repeating) logic. The <code>el</code> accepts function as first argument. In that case, the function should return dom elements and the second argument for <code>el</code> is argument for given element.</p><!--<dde:mark type="component" name="example" host="this" ssr/>--><div id="code-example-1-320zz4y072o" class="example"><!--<dde:mark type="component" name="code" host="parentElement" ssr/>--><code class="language-js">import { el } from "https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-observables.js";
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 \\\"https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-observables.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\"}],\"toolbar\":false}"));</script><p>As you can see, in case of state-less/basic components there is no difference between calling component function directly or using <code>el</code> function.</p><p class="notice">It is nice to use similar naming convention as native DOM API. This allows us to use <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Destructuring_assignment" title="Destructuring assignment | MDN">the destructuring assignment syntax</a> and keep track of the native API (things are best remembered through regular use).</p><h3 id="h-creating-non-html-elements"><!--<dde:mark type="component" name="h3" host="parentElement" ssr/>--><a href="#h-creating-non-html-elements" tabindex="-1">#</a> Creating non-HTML elements</h3><p>Similarly to the native DOM API (<a href="https://developer.mozilla.org/en-US/docs/Web/API/Document/createElementNS" title="MDN"><code>document.createElementNS</code></a>) for non-HTML elements we need to tell JavaScript which kind of the element to create. We can use the <code>elNS</code> function:</p><!--<dde:mark type="component" name="example" host="this" ssr/>--><div id="code-example-1-bcjydb50gdc" class="example"><!--<dde:mark type="component" name="code" host="parentElement" ssr/>--><code class="language-js">import { elNS, assign } from "https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-observables.js";
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 \\\"https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-observables.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\"}],\"toolbar\":false}"));</script><div class="notice"><!--<dde:mark type="component" name="mnemonic" host="parentElement" ssr/>--><h3 id="h-mnemonic"><!--<dde:mark type="component" name="h3" host="parentElement" ssr/>--><a href="#h-mnemonic" tabindex="-1">#</a> Mnemonic</h3><ul><li><code>assign(&lt;element&gt;, ...&lt;idl-objects&gt;): &lt;element&gt;</code> — assign properties to the element</li><li><code>el(&lt;tag-name&gt;, &lt;primitive&gt;)[.append(...)]: &lt;element-from-tag-name&gt;</code> — simple element containing only text</li><li><code>el(&lt;tag-name&gt;, &lt;idl-object&gt;)[.append(...)]: &lt;element-from-tag-name&gt;</code> — element with more properties</li><li><code>el(&lt;function&gt;, &lt;function-argument(s)&gt;)[.append(...)]: &lt;element-returned-by-function&gt;</code> — using component represented by function</li><li><code>el(&lt;...&gt;, &lt;...&gt;, ...&lt;addons&gt;)</code> — see following page</li><li><code>elNS(&lt;namespace&gt;)(&lt;as-el-see-above&gt;)[.append(...)]: &lt;element-based-on-arguments&gt;</code> — typically SVG elements</li></ul></div><div class="prevNext"><!--<dde:mark type="component" name="prevNext" host="parentElement" ssr/>--><a rel="prev" href="./" title="Introducing a&nbsp;library."><!--<dde:mark type="component" name="pageLink" host="parentElement" ssr/>-->Introduction (previous)</a><a rel="next" href="p03-events" title="Using not only events in UI declaratively."><!--<dde:mark type="component" name="pageLink" host="parentElement" ssr/>-->(next) Events and Addons</a></div></main></body></html>