2020-08-13 15:18:26 +08:00
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## Badge 标记
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出现在按钮、图标旁的数字或状态标记。
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### 基础用法
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展示新消息数量。
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:::demo 定义`value`属性，它接受`Number`或者`String`。
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```html
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<el-badge :value="12" class="item">
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<el-button size="small">评论</el-button>
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</el-badge>
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<el-badge :value="3" class="item">
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<el-button size="small">回复</el-button>
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</el-badge>
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<el-badge :value="1" class="item" type="primary">
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<el-button size="small">评论</el-button>
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</el-badge>
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<el-badge :value="2" class="item" type="warning">
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<el-button size="small">回复</el-button>
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</el-badge>
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<el-dropdown trigger="click">
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<span class="el-dropdown-link">
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点我查看<i class="el-icon-caret-bottom el-icon--right"></i>
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</span>
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2020-11-29 18:50:46 +08:00
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<template #dropdown>
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<el-dropdown-menu>
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<el-dropdown-item class="clearfix">
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评论
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<el-badge class="mark" :value="12" />
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</el-dropdown-item>
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<el-dropdown-item class="clearfix">
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回复
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<el-badge class="mark" :value="3" />
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</el-dropdown-item>
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</el-dropdown-menu>
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</template>
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2020-08-13 15:18:26 +08:00
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</el-dropdown>
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<style>
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.item {
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margin-top: 10px;
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margin-right: 40px;
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}
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</style>
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```
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:::
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### 最大值
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可自定义最大值。
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:::demo 由`max`属性定义，它接受一个`Number`，需要注意的是，只有当`value`为`Number`时，它才会生效。
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```html
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<el-badge :value="200" :max="99" class="item">
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<el-button size="small">评论</el-button>
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</el-badge>
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<el-badge :value="100" :max="10" class="item">
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<el-button size="small">回复</el-button>
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</el-badge>
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<style>
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.item {
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margin-top: 10px;
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margin-right: 40px;
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}
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</style>
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```
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:::
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### 自定义内容
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可以显示数字以外的文本内容。
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:::demo 定义`value`为`String`类型是时可以用于显示自定义文本。
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```html
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<el-badge value="new" class="item">
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<el-button size="small">评论</el-button>
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</el-badge>
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<el-badge value="hot" class="item">
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<el-button size="small">回复</el-button>
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</el-badge>
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<style>
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.item {
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margin-top: 10px;
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margin-right: 40px;
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}
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</style>
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```
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:::
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### 小红点
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以红点的形式标注需要关注的内容。
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:::demo 除了数字外，设置`is-dot`属性，它接受一个`Boolean`。
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```html
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<el-badge is-dot class="item">数据查询</el-badge>
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<el-badge is-dot class="item">
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<el-button class="share-button" icon="el-icon-share" type="primary"></el-button>
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</el-badge>
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<style>
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.item {
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margin-top: 10px;
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margin-right: 40px;
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}
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</style>
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```
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:::
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### Attributes
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| 参数 | 说明 | 类型 | 可选值 | 默认值 |
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|------------- |---------------- |---------------- |---------------------- |-------- |
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| value | 显示值 | string, number | — | — |
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| max | 最大值，超过最大值会显示 '{max}+'，要求 value 是 Number 类型 | number | — | — |
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| is-dot | 小圆点 | boolean | — | false |
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| hidden | 隐藏 badge | boolean | — | false |
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| type | 类型 | string | primary / success / warning / danger / info | — |
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