# Badge 徽标

### 介绍

出现在图标或文字右上角的红色圆点、数字或者文字，表示有新内容或者待处理的信息。

### 安装

```tsx
// react
import { Badge } from '@nutui/nutui-react-native';
```

## 代码实例

### 基本用法

:::demo

```tsx
import React from "react";
import { Badge, Avatar } from '@nutui/nutui-react-native';

const App = () => {
  return (
    <>
      <Badge value={8}>
        <Avatar icon="my" shape="square" />
      </Badge>
      <Badge value={76}>
        <Avatar icon="my" shape="square" />
      </Badge>
      <Badge value="NEW">
        <Avatar icon="my" shape="square" />
      </Badge>
      <Badge dot>
        <Avatar icon="my" shape="square" />
      </Badge>
    </>
  )
}
export default App;
```

:::

### 最大值

:::demo

```tsx
import React from "react";
import { Badge, Avatar } from '@nutui/nutui-react-native';

const App = () => {
  return (
    <>
      <Badge value={200} max={9}>
        <Avatar icon="my" shape="square" />
      </Badge>
      <Badge value={200} max={20}>
        <Avatar icon="my" shape="square" />
      </Badge>
      <Badge value={200} max={99}>
        <Avatar icon="my" shape="square" />
      </Badge>
    </>
  )
}
export default App;
```

:::

### 自定义徽标内容

:::demo

```tsx
import React from "react";
import { Badge, Avatar } from '@nutui/nutui-react-native';

const App = () => {
  return (
    <>
      <Badge icon="checklist">
        <Avatar icon="my" shape="square" />
      </Badge>
      <Badge icon="link">
        <Avatar icon="my" shape="square" />
      </Badge>
      <Badge icon="download">
        <Avatar icon="my" shape="square" />
      </Badge>
    </>
  )
}
export default App;
```

:::

### 自定义位置

:::demo

```tsx
import React from "react";
import { Badge, Avatar } from '@nutui/nutui-react-native';

const App = () => {
  return (
    <>
      <Badge value={8} top="5" right="5">
        <Avatar icon="my" shape="square" />
      </Badge>
      <Badge value={76} top="10" right="10">
        <Avatar icon="my" shape="square" />
      </Badge>
      <Badge value="NEW">
        <Avatar icon="my" shape="square" />
      </Badge>
    </>
  )
}
export default App;
```

:::

### 独立展示

:::demo

```tsx
import React from "react";
import { Badge } from '@nutui/nutui-react-native';

const App = () => {
  return (
    <>
      <Badge value={8}> </Badge>
      <Badge value={76}> </Badge>
      <Badge value="NEW"> </Badge>
    </>
  )
}
export default App;
```

:::

## API

### Props

| 字段   | 说明                                     | 类型    | 默认值  |
| ------ | ---------------------------------------- | ------- | ------- |
| value  | 显示的内容                               | String  | -       |
| max    | value 为数值时，最大值                   | Number  | `10000` |
| zIndex | 徽标的 z-index 值                        | Number  | `10`    |
| dot    | 是否为小点                               | Boolean | `false` |
| top    | 上下偏移量，支持单位设置，可设置为：5 等 | Number  | `0`     |
| right  | 左右偏移量，支持单位设置，可设置为：5 等 | Number  | `0`     |
| icons  | 徽标自定义                               | String  | -       |

## 主题定制

### 样式变量

组件提供了下列 CSS 变量，可用于自定义样式，使用方法请参考 [ConfigProvider 组件](#/zh-CN/component/configprovider)。

| 名称                                   | 默认值                     |
| -------------------------------------- | -------------------------- |
| --nutui-badge-color                    | ` #fff`                    |
| --nutui-badge-font-size                | ` $font-size-1`            |
| --nutui-badge-default-background-color | `  rgba(255, 255, 255, 1)` |
| --nutui-badge-border-radius            | ` 14`                      |
| --nutui-badge-padding-top              | ` 0`                       |
| --nutui-badge-padding-bottom           | ` 0`                       |
| --nutui-badge-padding-left             | ` 5`                       |
| --nutui-badge-padding-right            | ` 5`                       |
| --nutui-badge-z-index                  | ` 1`                       |
| --nutui-badge-dot-width                | ` 7`                       |
| --nutui-badge-dot-height               | ` 7`                       |
| --nutui-badge-dot-border-radius        | ` 7`                       |
| --nutui-badge-dot-padding              | ` 0`                       |