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// source https://jsbin.com
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| <html><body><script type="module"> | |
| import { html, render } from "https://unpkg.com/[email protected]?module"; | |
| function _selector(values) { | |
| return html` | |
| <select> | |
| <option value="">Choose one:</option> | |
| ${values.map( | |
| k => | |
| html` | |
| <option>${k}</option> | |
| ` | |
| )} | |
| </select> | |
| `; | |
| } | |
| // 2 => 6 => 7 => 3 | |
| class MyWidgetBug { | |
| constructor() { | |
| this.state = false; | |
| } | |
| refresh() { | |
| render([html` | |
| <input | |
| type="checkbox" | |
| @change=${e => { | |
| this.state = e.target.checked; | |
| this.refresh(); | |
| }} | |
| >`, | |
| this.state ? _selector([1, 2, 3]) | |
| : _selector([5, 6, 7]) | |
| ], | |
| document.body | |
| ); | |
| } | |
| } | |
| new MyWidgetBug().refresh(); | |
| </script></body></html> |
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