Created
February 21, 2019 11:00
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React without using setState
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script src="https://unpkg.com/[email protected]/umd/react.production.min.js"></script> | |
| <script src="https://unpkg.com/[email protected]/umd/react-dom.production.min.js"></script> | |
| <title>Tests</title> | |
| <meta charset="UTF-8"> | |
| </head> | |
| <body> | |
| <div id="app"></div> | |
| <script type="text/javascript"> | |
| var el = React.createElement; | |
| function Inner(props) { | |
| return el('div', {}, "Hello " + props.name); | |
| } | |
| function Btn(props) { | |
| return el( | |
| 'button', | |
| {onClick: props.click}, | |
| props.label | |
| ); | |
| } | |
| function App(props) { | |
| var that = this; | |
| function changeName(name) { | |
| props.change('name', name); | |
| } | |
| return el( | |
| 'div', | |
| {}, | |
| [ | |
| el( | |
| Btn, | |
| { | |
| click: changeName.bind(null, 'Alice'), | |
| label: 'Alice' | |
| }, | |
| []), | |
| el( | |
| Btn, | |
| { | |
| click: changeName.bind(null, 'Bob'), | |
| label: 'Bob' | |
| }, | |
| []), | |
| el( | |
| Inner, | |
| {name: props.state.name}) | |
| ]); | |
| } | |
| var s = { | |
| state: { | |
| name: 'Alice' | |
| }, | |
| change(key, value) { | |
| s.state[key] = value; | |
| s.render(); | |
| }, | |
| render() { | |
| ReactDOM.render( | |
| el(App, s), | |
| document.getElementById('app')); | |
| } | |
| }; | |
| s.render(); | |
| </script> | |
| </body> | |
| </html> |
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