el-select下拉框 添加 el-checkbox 多选框

效果

vue

<el-select v-model="value" multiple style="width: 100%" popper-class="select-popover-class" placeholder="请选择试验项目">
	<el-option 
	v-for="item in options" 
	:key="item.value" 
	:value="item.value"
	:label="item.label" >
	<el-checkbox :value="options.includes(item.value)" :label="item.label"></el-checkbox>
	</el-option>
</el-select>

<script>
  export default {
    data() {
      return {
        value: [],
        options: [
        {
            label: '选项一',
            value: 1
        },
        {
            label: '选项二',
            value: 2
        }
    ]
      }
    }
  };
</script>  

css

<style lang="scss" scoped>
/* 控制全选按钮样式 */
.select-popover-class .el-scrollbar__view > .el-checkbox{
    padding: 5px 20px;
}

/* 取消多选框触发事件 */
.select-popover-class .el-scrollbar__view > li .el-checkbox {
    pointer-events: none;
}

/* 隐藏多选框选中勾选样式 √ */
.select-popover-class .el-scrollbar__view > li::after {
    display: none;
}
</style>

参考

el-select下拉框 添加 el-checkbox 多选框，支持全选、取消全选