elementui table 固定列_Vue动态控制表格列的显示和隐藏

 <el-dropdown :hide-on-click="false">

    
         <i class="iconfont icon-shaixuan" ></i>
    
         <el-dropdown-menu slot="dropdown" >
    
           <el-scrollbar style="height: 60vh">//作用是数据过多把表单数据的整体高度固定、多出的区域可以下拉展示
    
             <el-checkbox-group v-model="check">
    
               <el-dropdown-item v-for="(item,index) in checkList" :key="index"><el-checkbox :label="item" :key="item"></el-checkbox>
    
               </el-dropdown-item>
    
             </el-checkbox-group>
    
           </el-scrollbar>
    
         </el-dropdown-menu>
    
 </el-dropdown>
    
 <el-table :data="institutionalTypeList" border align="center" v-loading="listLoading" style="width: 100%;" :header-cell-style="tableBg">
    
     <af-table-column type="index" :index="indexMethod" label="序号" width="90">
    
     </af-table-column>
    
     <af-table-column v-if="lists[0].ispass" prop="id" label="编码" >
    
     </af-table-column>
    
     <af-table-column v-if="lists[1].ispass" prop="name" label="名称" >
    
     </af-table-column>
    
     <af-table-column v-if="lists[2].ispass" prop="updatetime" label="更新时间" >
    
     </af-table-column>
    
 </el-table>
    
    
    
    

 data() {

    
       return {
    
     check:['编码','名称','更新时间'],
    
     checkList:['编码','名称','更新时间'],
    
     lists:[
    
       {label:'编码',prop:'id',ispass:true},
    
       {label:'名称',prop:'name',ispass:true},
    
       {label:'更新时间',prop:'updatetime',ispass:true},
    
     ],
    
       }
    
     },
    
    
    
    

 watch:{

    
       check(newVal){
    
         if (newVal) {
    
           var arr = this.checkList.filter(i => newVal.indexOf(i) < 0) //未选中
    
           this.lists.map(i => {
    
             if (arr.indexOf(i.label) !== -1) {
    
               i.ispass = false
    
             } else {
    
               i.ispass = true
    
             }
    
           })
    
         }
    
       }
    
     },