vue如何实现基于element-ui的三级CheckBox复选框

接下来是数据结构，自定义的，可以更后台商议，但是字段indeterminate（显示不确定状态~符号），selected（CheckBox选中状态）一定要让后台加入到data中，其他可以按照后台数据来。

distributorsInfo:[
          { partitionName:'1区',selected:false,partitionId:1,isIndeterminate:false,
            country:[
            {  id: "1",fieldName: "奥地利",fieldTableName: "奥地利",distributors:'UPS',selected: false},
            {  id: "2",fieldName: "芬兰",fieldTableName: "芬兰",distributors:'UPS',selected: false},
            {  id: "3",fieldName: "意大利",fieldTableName: "意大利",distributors:'UPS',selected: false},
            {  id: "4",fieldName: "葡萄牙",fieldTableName: "葡萄牙",distributors:'UPS',selected: false},
            {  id: "9",fieldName: "西班牙",fieldTableName: "西班牙",distributors:'UPS',selected: false},
            {  id: "10",fieldName: "瑞典",fieldTableName: "瑞典",distributors:'UPS',selected: false},]
          },
          { partitionName:'2区',selected:false,partitionId:2,isIndeterminate:false,
            country:[
            {  id: "5",fieldName: "丹麦",fieldTableName: "单买",distributors:'',selected: false},
            {  id: "6",fieldName: "法国",fieldTableName: "法国",distributors:'',selected: false},]
          },
          { partitionName:'3区',selected:false,partitionId:3,isIndeterminate:false,
            country:[
            {  id: "7",fieldName: "德国",fieldTableName: "德国",distributors:'YODEL',selected: false},
            {  id: "8",fieldName: "瑞士",fieldTableName: "瑞士",distributors:'DPD',selected: false}]
          }
        ],
        ischeckAll:false,//一级全选状态

因为此处是三级复选，所以函数为三个change，具体有详细注释可以查看

handleCheckAllChange(e){//一级change事件
        this.ischeckAll = e
        if(e == true){
          this.indeterminate = false
          for(var i=0,len=this.distributorsInfo.length; i
以下是页面完整组件代码可以使用预览



.deliverySetting{
  padding: 20px 0;
  position: relative;
  .el-table{
    thead{
      tr{
        th{
          font-size: 14px;
        }
      }
    }
    tbody{
      tr{
        td{
          vertical-align: baseline;
          p{
            line-height: 30px;
          }
          .el-checkbox-group{
            display: flex;
            flex-direction: column;
            label{
              line-height: 30px;
              margin-left: 0;
            }
          }
        }
      }
    }
  }
  .deliverySetting-table{
    font-size: 14px;
    color: #333;
    .table-head,
    .table-body{
      display: flex;
      padding: 10px 0;
      .selection{
        width: 45px;
        text-align: center;
        line-height: 36px;
      }
      .width285{
        width: 185px;
      }
      .width365{
        width: 265px;
      }
    }
    .table-head{
      height: 36px;
      align-items: center;
      background-color: #E7F2FF;
    }
    .table-body{
      border-bottom: 1px solid #e4e4e4;
      color: #666;
      &:hover{
        background-color: #f5f7fa;
      }
      .width365{
        display: flex;
        flex-direction: column;
        label{
          line-height: 30px;
          margin-left: 0;
          color: #666;
        }
      }
      p{
        line-height: 30px;
      }
    }
  }
  .deliverySetting-btn{
    /*width: 100%;*/
    height: 59px;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    position: absolute;
    top: -55px;
    right: -16px;
    z-index: 100;
    .tabs-btn {
      min-width: 90px;
      height: 34px;
      line-height: 32px;
      padding: 0 10px;
      color: #2387f7;
      border: solid 1px #4fa2ff;
      background-color: #e7f2ff;
      cursor: pointer;
      &:nth-of-type(2) {
        margin: 0 15px;
      }
      input {
        border: none;
        background: transparent;
        color: inherit;
        cursor: inherit;
        outline: none;
        margin: 0;
        padding: 0;
      }
      &:hover {
        color: #fff;
        background-color: #2387f7;
      }
    }
  }
  .setDistributorDailog{
    .el-input{
      width: 270px;
    }
  }
}
好了，以后使用三级甚至多级复选都可以使用此方法添加change代码即可。
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