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# 事件
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- order: 4
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当 Slider 的值发生改变时，会触发 `onChange` 事件，并把改变后的值作为参数传入。在 `onmouseup` 时，会触发 `onAfterChange` 事件，并把当前值作为参数传入。
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---
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````jsx
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import { Slider } from 'antd';
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function log(value) {
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console.log(value);
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}
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ReactDOM.render(
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<div>
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<Slider defaultValue={30} onChange={log} />
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<Slider range step={10} defaultValue={[20, 50]} onChange={log} />
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<Slider defaultValue={30} onAfterChange={log} />
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</div>
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, mountNode);
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````
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