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JSX DOM
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8" /> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0" /> | |
| <title>Document</title> | |
| </head> | |
| <body> | |
| <div id="app"></div> | |
| <script type="module"> | |
| import htm from "https://esm.sh/[email protected]"; | |
| function factory(type, props, ...children) { | |
| if (typeof type === "function") { | |
| props.children = !props.children ? children : props.children; | |
| return type(props); | |
| } else { | |
| const el = document.createElement(type); | |
| for (const prop in props) { | |
| if (prop === "children") children = props[prop]; | |
| el.setAttribute(prop, props[prop]); | |
| } | |
| // Normalize children | |
| const normalized = []; | |
| normalizeChildren(normalized, children); | |
| for (let i = 0; i < normalized.length; i++) { | |
| const child = normalized[i]; | |
| el.appendChild(child); | |
| } | |
| return el; | |
| } | |
| } | |
| function normalizeChildren(arr, child) { | |
| // Ignore these | |
| if (child == null || typeof child === "boolean") { | |
| return; | |
| } | |
| if (Array.isArray(child)) { | |
| for (let i = 0; i < child.length; i++) { | |
| normalizeChildren(arr, child[i]); | |
| } | |
| } else if (typeof child === "object") { | |
| arr.push(child); | |
| } else { | |
| arr.push(new Text(child)); | |
| } | |
| } | |
| const html = htm.bind(factory); | |
| function Foo(props) { | |
| return html`<p>component children: ${props.children}</p>`; | |
| } | |
| const root = html`<div id="foo"> | |
| <h1>JSX DOM</h1> | |
| <p>Foo component follows</p> | |
| <${Foo} id="foo"> | |
| <span>child</span> | |
| <//> | |
| </div>`; | |
| document.getElementById("app").appendChild(root); | |
| </script> | |
| </body> | |
| </html> |
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