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Minimal Web Component Demo App Starter
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| const tagName = 'demo-app'; | |
| const template = document.createElement('template'); | |
| template.innerHTML = ` | |
| <style> | |
| :host { | |
| display: block; | |
| contain: content; | |
| } | |
| :host([hidden]) { | |
| display: none; | |
| } | |
| *, *::after, *::before { | |
| box-sizing: border-box; | |
| } | |
| </style> | |
| <p>Hello World!</p> | |
| `; | |
| class DemoApp extends HTMLElement { | |
| constructor(props) { | |
| super(); | |
| this.props = props; | |
| this.attachShadow({ mode: 'open' }); | |
| this.shadowRoot.appendChild(template.content.cloneNode(true)); | |
| console.log(props); | |
| } | |
| } | |
| customElements.define(tagName, DemoApp); | |
| export { | |
| DemoApp as default, | |
| DemoApp, | |
| tagName as demoAppTagName, | |
| } |
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| <!doctype html><html lang=en><meta charset=utf-8><title>Demo</title> | |
| <script type=module src=./index.js async></script> | |
| <demo-app></demo-app> |
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| import DemoAppDefault from './demo-app.js'; | |
| import { DemoApp, demoAppTagName as tagName } from './demo-app.js'; | |
| const elems = [ | |
| document.createElement(tagName), | |
| new DemoApp({ name: 'Jane' }), | |
| new DemoAppDefault({ name: 'Cruel World' }), | |
| ]; | |
| elems.forEach(elem => document.body.appendChild(elem)); |
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| { | |
| "name": "demo-app", | |
| "version": "0.1.0", | |
| "description": "", | |
| "main": "index.js", | |
| "scripts": { | |
| "start": "http-server -o", | |
| "test": "echo \"Error: no test specified\" && exit 1" | |
| }, | |
| "keywords": [], | |
| "author": "", | |
| "license": "ISC", | |
| "devDependencies": { | |
| "http-server": "^0.11.1" | |
| } | |
| } |
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npm i && npm start