el-tree中的checkbox状态添加disabled属性

created() {
    this.getLoadData()
  },
methods:{
　　setDisabled(arr) {
      for (var i = 0; i < arr.length; i++) {
        arr[i][‘disabled‘] = this.disabled
        if (arr[i].children && arr[i].children.length > 0) {
          this.setDisabled(arr[i].children)
        }
      }
    },
　　getLoadData(node, callback) {
        var orgList =  [{
          id: 1,
          label: ‘一级 2‘,
          children: [{
            id: 3,
            label: ‘二级 2-1‘,
            children: [{
              id: 4,
              label: ‘三级 3-1-1‘
            }, {
              id: 5,
              label: ‘三级 3-1-2‘,
            }]
          }, {
            id: 2,
            label: ‘二级 2-2‘,
            disabled: true,
            children: [{
              id: 6,
              label: ‘三级 3-2-1‘
            }, {
              id: 7,
              label: ‘三级 3-2-2‘,
            }]
          }]
        }]
        this.data = orgList
        this.setDisabled(this.data)
      })
    }
}