---
order: 4
title:
  zh-CN: 事件
  en-US: Event
---

## zh-CN

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。

## en-US

The `onChange` callback function will fire when the user changes the slider's value. The `onAfterChange` callback function will fire when `onmouseup` fired.

```tsx
import { Slider } from 'antd';
import React from 'react';

const onChange = (value: number | [number, number]) => {
  console.log('onChange: ', value);
};

const onAfterChange = (value: number | [number, number]) => {
  console.log('onAfterChange: ', value);
};

const App: React.FC = () => (
  <>
    <Slider defaultValue={30} onChange={onChange} onAfterChange={onAfterChange} />
    <Slider
      range
      step={10}
      defaultValue={[20, 50]}
      onChange={onChange}
      onAfterChange={onAfterChange}
    />
  </>
);

export default App;
```