组件-Element—Checkbox（多选框）

组件-Element—Checkbox（多选框）

组件—多选框

1. 基础用法
   

<template>   <!-- `checked` 为 true 或 false -->   <el-checkbox v-model="checked">备选项</el-checkbox> </template> <script>   export default {     data() {       return {         checked: true       };     }   }; </script> 

2. 禁用状态
   

<template>   <el-checkbox v-model="checked1" disabled>备选项1</el-checkbox>   <el-checkbox v-model="checked2" disabled>备选项</el-checkbox> </template> <script>   export default {     data() {       return {         checked1: false,         checked2: true       };     }   }; </script> 

3. 多选框组
   

<template>   <el-checkbox-group v-model="checkList">     <el-checkbox label="复选框 A"></el-checkbox>     <el-checkbox label="复选框 B"></el-checkbox>     <el-checkbox label="复选框 C"></el-checkbox>     <el-checkbox label="禁用" disabled></el-checkbox>     <el-checkbox label="选中且禁用" disabled></el-checkbox>   </el-checkbox-group> </template>  <script>   export default {     data () {       return {         checkList: ['选中且禁用','复选框 A']       };     }   }; </script> 

4. indeterminate 状态
   

<template>   <el-checkbox :indeterminate="isIndeterminate" v-model="checkAll" @change="handleCheckAllChange">全选</el-checkbox>   <div style="margin: 15px 0;"></div>   <el-checkbox-group v-model="checkedCities" @change="handleCheckedCitiesChange">     <el-checkbox v-for="city in cities" :label="city" :key="city">{{city}}</el-checkbox>   </el-checkbox-group> </template> <script>   const cityOptions = ['上海', '北京', '广州', '深圳'];   export default {     data() {       return {         checkAll: false,         checkedCities: ['上海', '北京'],         cities: cityOptions,         isIndeterminate: true       };     },     methods: {       handleCheckAllChange(val) {         this.checkedCities = val ? cityOptions : [];         this.isIndeterminate = false;       },       handleCheckedCitiesChange(value) {         let checkedCount = value.length;         this.checkAll = checkedCount === this.cities.length;         this.isIndeterminate = checkedCount > 0 && checkedCount < this.cities.length;       }     }   }; </script> 

5. 可选项目数量的限制
   

<template>   <el-checkbox-group      v-model="checkedCities"     :min="1"     :max="2">     <el-checkbox v-for="city in cities" :label="city" :key="city">{{city}}</el-checkbox>   </el-checkbox-group> </template> <script>   const cityOptions = ['上海', '北京', '广州', '深圳'];   export default {     data() {       return {         checkedCities: ['上海', '北京'],         cities: cityOptions       };     }   }; </script> 

6. 按钮样式
   

<template>   <div>     <el-checkbox-group v-model="checkboxGroup1">       <el-checkbox-button v-for="city in cities" :label="city" :key="city">{{city}}</el-checkbox-button>     </el-checkbox-group>   </div>   <div style="margin-top: 20px">     <el-checkbox-group v-model="checkboxGroup2" size="medium">       <el-checkbox-button v-for="city in cities" :label="city" :key="city">{{city}}</el-checkbox-button>     </el-checkbox-group>   </div>   <div style="margin-top: 20px">     <el-checkbox-group v-model="checkboxGroup3" size="small">       <el-checkbox-button v-for="city in cities" :label="city" :disabled="city === '北京'" :key="city">{{city}}</el-checkbox-button>     </el-checkbox-group>   </div>   <div style="margin-top: 20px">     <el-checkbox-group v-model="checkboxGroup4" size="mini" disabled>       <el-checkbox-button v-for="city in cities" :label="city" :key="city">{{city}}</el-checkbox-button>     </el-checkbox-group>   </div> </template> <script>   const cityOptions = ['上海', '北京', '广州', '深圳'];   export default {     data () {       return {         checkboxGroup1: ['上海'],         checkboxGroup2: ['上海'],         checkboxGroup3: ['上海'],         checkboxGroup4: ['上海'],         cities: cityOptions       };     }   } </script> 

7. 带有边框
   

<template>   <div>     <el-checkbox v-model="checked1" label="备选项1" border></el-checkbox>     <el-checkbox v-model="checked2" label="备选项2" border></el-checkbox>   </div>   <div style="margin-top: 20px">     <el-checkbox v-model="checked3" label="备选项1" border size="medium"></el-checkbox>     <el-checkbox v-model="checked4" label="备选项2" border size="medium"></el-checkbox>   </div>   <div style="margin-top: 20px">     <el-checkbox-group v-model="checkboxGroup1" size="small">       <el-checkbox label="备选项1" border></el-checkbox>       <el-checkbox label="备选项2" border disabled></el-checkbox>     </el-checkbox-group>   </div>   <div style="margin-top: 20px">     <el-checkbox-group v-model="checkboxGroup2" size="mini" disabled>       <el-checkbox label="备选项1" border></el-checkbox>       <el-checkbox label="备选项2" border></el-checkbox>     </el-checkbox-group>   </div> </template>  <script>   export default {     data () {       return {         checked1: true,         checked2: false,         checked3: false,         checked4: true,         checkboxGroup1: [],         checkboxGroup2: []       };     }   } </script>