2016-03-31 14:17:09 +08:00
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---
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category: Components
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chinese: 徽标数
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2016-05-11 14:21:01 +08:00
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type: Presentation
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2016-03-31 14:17:09 +08:00
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english: Badge
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---
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2015-09-01 13:59:07 +08:00
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2015-09-01 17:16:51 +08:00
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图标右上角的圆形徽标数字。
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2015-09-01 13:59:07 +08:00
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## 何时使用
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2015-09-01 17:16:51 +08:00
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一般出现在通知图标或头像的右上角，用于显示需要处理的消息条数，通过醒目视觉形式吸引用户处理。
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2015-09-01 13:59:07 +08:00
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## API
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2015-09-01 17:48:22 +08:00
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```jsx
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2015-11-04 18:02:59 +08:00
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<Badge count={5}>
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2015-09-01 17:48:22 +08:00
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<a href="#" className="head-example"></a>
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</Badge>
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```
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2015-12-18 17:27:22 +08:00
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```jsx
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<Badge count={5} />
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```
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2015-09-01 13:59:07 +08:00
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| 参数 | 说明 | 类型 | 可选值 | 默认值 |
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|----------------|----------------------------------|------------|---------|--------|
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2015-12-11 17:57:09 +08:00
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| count | 展示的数字，大于 overflowCount 时显示为 `${overflowCount}+`，为 0 时隐藏 | Number | | |
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| overflowCount | 展示封顶的数字值 | Number | | 99 |
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2015-09-01 13:59:07 +08:00
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| dot | 不展示数字，只有一个小红点 | boolean | | false |
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