基于ElementUI中Table嵌套实现多选的示例代码

<template>
 <div>
  <el-table
   ref="multipleTable"
   :data="tableData"
   style="width: 100%; margin-bottom: 20px"
   row-key="id"
   border
   default-expand-all
   :select-on-indeterminate="true"
   :tree-props="{ children: 'children', hasChildren: 'hasChildren' }"
   @select="rowSelect"
   @select-all="selectAll"
  >
   <el-table-column type="selection" width="55"> </el-table-column>
   <el-table-column prop="date" label="日期" width="180"> </el-table-column>
   <el-table-column prop="name" label="姓名" width="180"> </el-table-column>
   <el-table-column prop="address" label="地址"></el-table-column>
  </el-table>
 </div>
</template>

treeFindPath(tree, func, path = []) {
   if (!tree) return [];
   for (const data of tree) {
    path.push(data);
    if (func(data)) return path;
    if (data.children) {
     const findChildren = this.treeFindPath(data.children, func, path);
     if (findChildren.length) return findChildren;
    }
    path.pop();
   }
   return [];
  },

  /**
   * @describe 全选
   */
  selectAll(selection) {
   console.log(selection);
   let isAllCheck = this.selectAllRecursion(this.tableData);
   // 是否有aa为false代表是有没选中
   this.checkoutAll(this.tableData, !isAllCheck);
  },
  /**
   * @describe 递归判断isChecked是否都是true,false代表是有没选中
   */
  selectAllRecursion(arr) {
   let isCheck = true;
   function isRecursion(arr) {
    arr.forEach((item) => {
     if (!item.isChecked) {
      isCheck = false;
      if (item.children) {
       isRecursion(item.children);
      }
     }
    });
   }
   isRecursion(arr);
   return isCheck;
  },
  /**
   * @describe 把所有的够改为true或者false
   */
  checkoutAll(arr, boole) {
   var _this = this;
   function allCheck(arr, boole) {
    arr.forEach((item) => {
     item.isChecked = boole;
     _this.$refs.multipleTable.toggleRowSelection(item, boole);
     if (item.children) {
      allCheck(item.children, boole);
     }
    });
   }
   allCheck(arr, boole);
  },