vue 关于树杈图问题

        <el-tree
          :data="orgrelation"
          show-checkbox
          node-key="id"
          ref="tree"
          :default-expand-all="true"
          @check-change="handleClick"
        ></el-tree>
//触发条件    this.$refs.tree.方法()    此方法时调取到组件内部的方法 
      var taskArr = this.$refs.SlotTree.getCheckedNodes();
      var keysArr = this.$refs.SlotTree.getCheckedKeys();  
      var halfKeysArr = this.$refs.SlotTree.getHalfCheckedKeys();
      var halfTaskArr = this.$refs.SlotTree.getHalfCheckedNodes();
      var currentKey = this.$refs.SlotTree.getCurrentKey();
      var currentNode = this.$refs.SlotTree.getCurrentNode();

tree 的所有方法