Created
July 12, 2024 16:27
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Light + Shadow DOM together... https://gomakethings.com
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>Basic Setup</title> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <style type="text/css"> | |
| body { | |
| margin: 0 auto; | |
| max-width: 40em; | |
| width: 88%; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <count-up></count-up> | |
| <script> | |
| // JavaScript | |
| customElements.define('count-up', class extends HTMLElement { | |
| /** | |
| * The class constructor object | |
| */ | |
| constructor () { | |
| // Always call super first in constructor | |
| super(); | |
| // Set attributes | |
| this.count = 0; | |
| // Creates a shadow root | |
| this.root = this.attachShadow({mode: 'open'}); | |
| // Inject some HTML | |
| this.btn = document.createElement('button'); | |
| this.btn.textContent = 'Count up!'; | |
| this.announce = document.createElement('div'); | |
| this.announce.setAttribute('role', 'status'); | |
| // Generate HTML | |
| this.root.innerHTML = `<slot></slot>`; | |
| this.render(); | |
| this.root.append(this.announce); | |
| this.append(this.btn); | |
| // Event listener | |
| this.btn.addEventListener('click', () => { | |
| this.count++; | |
| this.render(); | |
| }); | |
| } | |
| render () { | |
| this.announce.textContent = `Clicked ${this.count} times`; | |
| } | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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