ant-design/components/progress/demo/dynamic.md

---
order: 4
title:
  zh-CN: 动态展示
  en-US: Dynamic
---

## zh-CN

会动的进度条才是好进度条。

## en-US

A dynamic progress bar is better.

```jsx
import { Progress, Button } from 'antd';
import { MinusOutlined, PlusOutlined } from '@ant-design/icons';

const ButtonGroup = Button.Group;

class App extends React.Component {
  state = {
    percent: 0,
  };

  increase = () => {
    let percent = this.state.percent + 10;
    if (percent > 100) {
      percent = 100;
    }
    this.setState({ percent });
  };

  decline = () => {
    let percent = this.state.percent - 10;
    if (percent < 0) {
      percent = 0;
    }
    this.setState({ percent });
  };

  render() {
    return (
      <div>
        <Progress percent={this.state.percent} />
        <ButtonGroup>
          <Button onClick={this.decline} icon={<MinusOutlined />} />
          <Button onClick={this.increase} icon={<PlusOutlined />} />
        </ButtonGroup>
      </div>
    );
  }
}

ReactDOM.render(<App />, mountNode);
```