amis/docs/zh-CN/components/badge.md
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fix:调整offset属性基于position位置进行水平、垂直偏移 (#4861)
Co-authored-by: ”jiatianqi“ <”jiatianqi@baidu.com“>
2022-07-14 12:43:40 +08:00

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---
title: Badge 角标
description:
type: 0
group: ⚙ 组件
menuName: Badge
icon:
order: 30
---
## 基本用法
部分组件可以设置 `badge` 属性来显示角标。
> 1.2.2 及之前版本只支持头像组件
>
> 1.2.3 开始支持按钮、链接、模板组件。
```schema: scope="body"
[
{
"type": "avatar",
"badge": {
"mode": "text",
"text": 10
}
},
{
"type": "divider"
},
{
"type": "action",
"label": "按钮",
"badge": {
"mode": "text",
"text": 15
}
},
{
"type": "divider"
},
{
"type": "link",
"href": "https://www.baidu.com",
"body": "百度一下,你就知道",
"badge": {
"position": "top-right"
}
},
{
"type": "divider"
},
{
"type": "tpl",
"tpl": "Hello ${text}",
"badge": {
"mode": "text",
"text": 25
}
},
{
"type": "divider"
},
{
"type": "icon",
"icon": "cloud",
"className": "text-info text-xl",
"badge": {
"position": "top-left"
}
},
{
"type": "divider"
},
{
"type": "action",
"label": "按钮",
"badge": {
"mode": "ribbon",
"text": "HOT"
}
},
]
```
## 显示文字或数值
设置 `mode` 为 `text`,通过 `text` 属性来显示文字或数字,数值为零的时候将不显示。
```schema: scope="body"
[
{
"type": "avatar",
"badge": {
"mode": "text",
"text": 10
}
},
{
"type": "avatar",
"className": "m-l",
"badge": {
"mode": "text",
"text": 0
}
},
{
"type": "avatar",
"className": "m-l",
"badge": {
"mode": "text",
"text": "new"
}
}
]
```
## 显示位置
通过 `position` 来控制角标显示位置,默认 `top-right`,还可以设置为 `top-left`、`bottom-left`、`bottom-right`。
```schema: scope="body"
[
{
"type": "avatar",
"badge": {
"position": "top-left"
}
},
{
"type": "avatar",
"className": "m-l",
"badge": {
"position": "bottom-left"
}
},
{
"type": "avatar",
"className": "m-l",
"badge": {
"position": "bottom-right"
}
}
]
```
通过 `offset` 来控制角标显示位置offset 相对于 position 位置进行水平、垂直偏移。offset 在 mode=ribbon 下设置无效。
```schema: scope="body"
[
{
"type": "avatar",
"badge": {
"offset": [10, 10]
}
}
]
```
## 动态数字
`text` 可以取上下文变量。
```schema
{
"data": {
"myData": 10
},
"type": "page",
"body": [
{
"type": "avatar",
"badge": {
"mode": "text",
"visibleOn": "this.myData > 1",
"text": "${myData}"
}
}
]
}
```
## 设置封顶值
通过 `overflowCount` 可以设置封顶值。超过 overflowCount 的会显示为 ${overflowCount}+,默认的 overflowCount 为 99
```schema
{
"type": "page",
"body": [
{
"type": "avatar",
"badge": {
"mode": "text",
"text": 10,
"overflowCount": 9
}
}
]
}
```
## 动态控制是否显示角标
角标可以直接写表达式来判断是否显示
```schema
{
"data": {
"myData": 10
},
"type": "page",
"body": [
{
"type": "avatar",
"badge": "this.myData > 1"
},
{
"type": "avatar",
"className": "m-l",
"badge": "this.myData > 10"
}
]
}
```
还可以通过 `visibleOn` 表达式来动态控制,这样还能设置其他属性
```schema
{
"data": {
"myData": 10
},
"type": "page",
"body": [
{
"type": "avatar",
"badge": {
"visibleOn": "this.myData > 1"
}
},
{
"type": "avatar",
"className": "m-l",
"badge": {
"visibleOn": "this.myData > 10"
}
}
]
}
```
## 设置大小
通过 `size` 来控制大小
```schema: scope="body"
[
{
"type": "avatar",
"badge": {
"mode": "text",
"text": 10,
"size": 20
}
},
{
"type": "avatar",
"className": "m-l",
"badge": {
"mode": "text",
"text": 10,
"size": 12
}
},
{
"type": "avatar",
"className": "m-l",
"badge": {
"size": 12
}
},
{
"type": "avatar",
"className": "m-l",
"badge": {
"size": 4
}
}
]
```
## 设置角标级别
通过 `level` 来设置角标级别,改变角标背景颜色
```schema: scope="body"
[
{
"type": "avatar",
"badge": {
"mode": "text",
"text": 10,
"size": 20,
"level": "success"
}
},
]
```
## 是否显示动画
在默认点状态下,可以通过设置 `animation` 属性来控制是否显示动画
```schema: scope="body"
[
{
"type": "avatar",
"badge": {
"animation": true
}
}
]
```
## 自定义样式
通过 `style` 来控制展现样式,比如背景及文字的颜色
```schema: scope="body"
[
{
"type": "avatar",
"badge": {
"mode": "text",
"text": 10,
"style": {
"background": "#46C93A"
}
}
},
{
"type": "avatar",
"className": "m-l",
"badge": {
"mode": "text",
"text": 10,
"style": {
"background": "#1A5CFF"
}
}
}
]
```
## 属性表
| 属性名 | 类型 | 默认值 | 说明 |
| ------------- | ------------------------------------------- | --------- | ---------------------------------------------------------------------- |
| mode | `string` | dot | 角标类型,可以是 dot/text/ribbon |
| text | `string`\|`number` | | 角标文案,支持字符串和数字,在 mode='dot'下设置无效 |
| size | `number` | | 角标大小 |
| level | `string` | | 角标级别, 可以是 info/success/warning/danger, 设置之后角标背景颜色不同 |
| overflowCount | `number` | 99 | 设置封顶的数字值 |
| position | `string` | top-right | 角标位置, 可以是 top-right/top-left/bottom-right/bottom-left |
| offset | `number[top, left]` | [0, 0] | 角标位置offset 相对于 position 位置进行水平、垂直偏移 |
| className | `string` | | 外层 dom 的类名 |
| animation | `boolean` | | 角标是否显示动画 |
| style | `object` | | 角标的自定义样式 |
| visibleOn | [表达式](../../../docs/concepts/expression) | | 控制角标的显示隐藏 |