elementUI el-table回显

主要的三个参数
:row-key=“(row) => { return row.id }”
:data=“tableData”
:reserve-selection=“true”

    <el-table
          v-if="wgShow2"
          ref="multipleTable"
          :row-key="(row) => { return row.id }"
          @selection-change="handleSelectionChange"
          max-height="500"
          :data="tableData"
          tooltip-effect="dark"
          style="width: 100%"
        >
          <el-table-column type="selection" :reserve-selection="true" width="55"></el-table-column>
          <el-table-column prop="name" label="姓名"></el-table-column>
    </el-table>

// 后台返回的数据 是字符串，要转换一下
const treeArr = row.receiveUserIdList ? JSON.parse(row.receiveUserIdList) : []
// 建立新的数组和el-table :data 原数据数组过滤
const newTree = []   
 treeArr.map(x => {
          newTree.push({
            id: x
          })
  })
 that.$nextTick(() => {
          // setTimeout  解决 Cannot read property 'setCheckedKeys' of undefined
          setTimeout(() => {
          // 回显必须要是 同宗同源的数据才行
            this.tableData.forEach(i => {
              newTree.forEach(j => {
                if (i.id == j.id) {
                  this.$refs.multipleTable.toggleRowSelection(i, true)
                }
              })
            })
          }, 200)
        })

最终效果：