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Simple ivi.js example with nested components using context
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <title>ivi example</title> | |
| </head> | |
| <body> | |
| <script type="module"> | |
| import {createRoot, update, component, useState, context} from 'https://cdn.jsdelivr.net/npm/[email protected]/+esm' | |
| import {htm} from 'https://cdn.jsdelivr.net/npm/@ivi/[email protected]/+esm'; | |
| const [getCountContext, CountContext] = context(); | |
| const Counter = component((c) => { | |
| const init = getCountContext(c) || 0; | |
| const [count, setCount] = useState(c, init); | |
| const dec = () => { | |
| setCount(count() - 1); | |
| }; | |
| const inc = () => { | |
| setCount(count() + 1); | |
| }; | |
| return () => { | |
| return htm` | |
| <div class="clicker"> | |
| <div>${count()}</div> | |
| <button @click=${dec}>-</button> | |
| <button @click=${inc}>+</button> | |
| </div> | |
| `}; | |
| }); | |
| const App = component(() => () => htm` | |
| <div class="app"> | |
| ${CountContext(33, Counter())} | |
| ${CountContext(44, Counter())} | |
| ${CountContext(55, Counter())} | |
| ${CountContext(66, Counter())} | |
| </div> | |
| ` | |
| ); | |
| update(createRoot(document.body), App()); | |
| </script> | |
| </body> | |
| </html> |
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