el-table 选中行与复选框相互联动的实现步骤

// <template>
<el-table
            class="right-panel-table"
            :data="tableData"           
            @selection-change="(val) => handleSelectionChange(val,'ischeckboxTick')"
            ref="multipleTable"
            v-loading="planLoading"
            @cell-mouse-enter="handleMouseEnter"
            @cell-mouse-leave="handleMouseOut"
            @row-click="(row,column,event) => handleRowClick(row,column,event,'onclumn')"
            highlight-current-row
          >
 
//  <script>  添加row-click方法，点击列表行时触发
handleRowClick(row,column,event, onclumn){  
      if(onclumn === 'onclumn') {
        this.isonClunm = true;
      }
      row.flag = !row.flag;
      this.$refs.multipleTable.toggleRowSelection(row, row.flag);
      if(row.flag) {
        this.selectSatitleLatLon(row);
      } else {
        this.unselectSatitleLatLon(row);
      }
}

// template部分同上
// <script>
handleSelectionChange(val, checkFlag) {
      let that = this;
      if(checkFlag === 'ischeckboxTick') {
        that.ischeckboxTick = true
      }
      // 获取当前增加的或者减少的那条数据
      let n = {};
      let currentVal = [];
      val.forEach(item => {
        currentVal.push(item);
      })
      if(val.length > that.multipleSelection.length) {
        // 增加时比之前不一样的某个值
        n = (val.filter(item => !that.multipleSelection.includes(item)))[0];
      } else {
        // 减少时与之前不一样的值
        let oldSelect = [];
        that.multipleSelection.forEach(item => {
          oldSelect.push(item)
        })
        if(val.length === 0) {
          n = that.multipleSelection[0];
        } else {
          that.multipleSelection.forEach((item, index) => {
            let delIndex = 0;
            currentVal.forEach((item1, index1) => {
              if(item.sname === item1.sname && item.startTime === item1.startTime && item.endTime === item1.endTime) {
                delIndex = index;
                currentVal.splice(index1, 1);
                oldSelect.splice(delIndex, 1, '');   
              }
            })
          })
          oldSelect.forEach(item => {
            if(item !== '') {
              n = item
            }
          })
        }
      }
 
      that.multipleSelection = val;  // 选中的所有项
      that.isonClunm = false;
      that.ischeckboxTick = false;
     
    },