vue elementUI表格控制怎么显示隐藏对应列

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需求：后端返回全部列数据。前端根据选项来显示对应的列，如果不勾选，默认全部隐藏。

效果图

勾选后显示对应的列

上代码

html部分

这里用v-if来显示隐藏，因为这个elementul组件的原因，v-show不生效，要用v-if

<el-table-column
        v-if="lists[0].ispass"
          label="Upper"
          prop="db28"
          show-overflow-tooltip
        ></el-table-column>
        <el-table-column
        v-if="lists[1].ispass"
          label="Lower"
          prop="db31"
          show-overflow-tooltip
        ></el-table-column>
        <el-table-column
        v-if="lists[2].ispass"
          label="UP+LOW"
          prop="db34"
          show-overflow-tooltip
        ></el-table-column>
        <el-table-column
        v-if="lists[3].ispass"
          label="Static"
          prop="db36"
          key="1"
          show-overflow-tooltip
        ></el-table-column>
        <el-table-column
        v-if="lists[4].ispass"
          label="LRO-T1 OA"
          min-width="90px"
          prop="db44"
          key="2"
          show-overflow-tooltip
        >
</el-table-column>

data部分

ispass是用来控制显示或隐藏的，label是用来判断的。

lists:[
          {label:'Upper',ispass:false},
          {label:'Lower',ispass:false},
          {label:'UP+LO',ispass:false},
          {label:'Static',ispass:false},
          {label:'LRO-T1 OA',ispass:false},
          {label:'LRO-T2 OA',ispass:false},
          {label:'LRO-B1 OA',ispass:false},
          {label:'LRO-B2 OA',ispass:false},
          {label:'RRO-C OA',ispass:false},
          {label:'LRO-T1 Buige',ispass:false},
          {label:'LRO-T2 Buige',ispass:false},
          {label:'LRO-B1 Buige',ispass:false},
          {label:'LRO-B2 Buige',ispass:false},
          {label:'LRO-T1 Dent',ispass:false},
          {label:'LRO-T2 Dent',ispass:false},
          {label:'LRO-B1 Dent',ispass:false},
          {label:'LRO-B2 Dent',ispass:false},
        ],
        check:[
        "Upper",
        "Lower",
        "UP+LO",
        "Static",
        "LRO-T1 OA",
        "LRO-T2 OA",
        "LRO-B1 OA",
        "LRO-B2 OA",
        "RRO-C OA",
        "LRO-T1 Buige",
        "LRO-T2 Buige",
        "LRO-B1 Buige",
        "LRO-B2 Buige",
        "LRO-T1 Dent",
        "LRO-T2 Dent",
        "LRO-B1 Dent",
        "LRO-B2 Dent",
      ],
      checkList: [
      ],

方法部分

直接用watch监听，复制就行。这里注意checkList和check
checkList：代表你多选框的默认选中，我没写就是默认全不选
check：这个也要写和lists里的label一样，用来判断的。

watch:{
      checkList(newVal){
            if (newVal) {
              var arr = this.check.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
                }
              })
            }
      }
    },

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