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关键样式==>style="display: block; padding-top: 10px",代码如下:
<template>
<el-checkbox :indeterminate="isIndeterminate" v-model="checkAll" @change="handleCheckAllChange">全选</el-checkbox>
<el-checkbox-group v-model="checkedCities" @change="handleCheckedCitiesChange">
<el-checkbox v-for="city in cities" :label="city" :key="city" style="display: block; padding-top: 10px">{
{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>