ant-design/components/badge/demo/change.md

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---
order: 4
title:
zh-CN: 动态
en-US: Dynamic
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---
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## zh-CN
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展示动态变化的效果。
## en-US
The count will be animated as it changes.
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````jsx
import { Badge, Button, Icon } from 'antd';
const ButtonGroup = Button.Group;
const Test = React.createClass({
getInitialState() {
return {
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count: 5,
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show: true,
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};
},
increase() {
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const count = this.state.count + 1;
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this.setState({ count });
},
decline() {
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let count = this.state.count - 1;
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if (count < 0) {
count = 0;
}
this.setState({ count });
},
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onClick() {
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this.setState({
show: !this.state.show,
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});
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},
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render() {
return (
<div>
<Badge count={this.state.count}>
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<a href="#" className="head-example" />
</Badge>
<Badge dot={this.state.show}>
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<a href="#" className="head-example" />
</Badge>
<div style={{ marginTop: 10 }}>
<ButtonGroup>
<Button type="ghost" onClick={this.decline}>
<Icon type="minus" />
</Button>
<Button type="ghost" onClick={this.increase}>
<Icon type="plus" />
</Button>
</ButtonGroup>
<Button type="ghost" onClick={this.onClick} style={{ marginLeft: 8 }}>
Switch state
</Button>
</div>
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</div>
);
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},
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});
ReactDOM.render(
<Test />
, mountNode);
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````