我的是根據父級id做的一些判斷

<el-tree
     draggable :allow-drop="allowDrop" @node-drop="sort"
     accordion style="font-size:14px;width:250px;"
     ref="tree" :data="catalogList" :props="defaultProps" :expand-on-click-node="false"
     node-key="id" :highlight-current="true" :load="loadNode"
     lazy :render-content="renderContent" @node-click="handleNodeClick"
     empty-text="暫無資料">
 
   allowDrop(draggingNode,dropNode,type){
   //注掉的是同級拖拽
   /* if (draggingNode.data.level === dropNode.data.level) {
    if (draggingNode.data.aboveId === dropNode.data.aboveId) {
     return type === 'prev' || type === 'next'
    }
   } else {
    // 不同級進行處理
    return false
   } */
   //任意級別拖拽
   if (draggingNode.data.aboveId === dropNode.data.aboveId) {
     return type === 'prev' || type === 'next'
   } else {
    return type === 'prev' || type === 'next' || type === 'inner'
   }
  },//拖拽完成之後要重新排序
  /* 
  * draggingNode：被拖拽節點對應的 Node
  * dropNode：結束拖拽時最後進入的節點
  * type: 被拖拽節點的放置位置（before、after、inner）
  * event
  */
  sort(draggingNode,type,event) {
   console.log(draggingNode)
   console.log(dropNode)
   if (draggingNode.data.aboveId === dropNode.data.aboveId) {
    let obj = {
     aboveId:'',arr:[]
    }
    obj.aboveId = dropNode.data.aboveId
    for (let item of dropNode.parent.childNodes) {
     obj.arr.push(item.data.id)
    }
    console.log(obj)
    this.updateOrderMe(obj)
   } else {
    let obj = {
     aboveId:'',id:'',newAboveId:''
    }
    obj.aboveId = draggingNode.data.aboveId
    obj.id = draggingNode.data.id
    obj.newAboveId = dropNode.data.id
    this.randomDrag(obj)
   }
  },randomDrag(obj) {
   this.$http
    .post(url,obj).then(res =>{
	    if (!res.data.success) {
	     this.$message.warning(res.data.msg)
	    }
    })
  },updateOrderMe(obj) {
   this.$http
    .post(url,{
     aboveId:obj.aboveId,ids: obj.arr
    }).then(res =>{
	    if (!res.data.success) {
	     this.$message.warning(res.data.msg)
	    }
    })
  }

補充知識：element-ui tree 實現同級拖拽

我就廢話不多說了，大家還是直接看程式碼吧~

<template>
 <div>
  <el-tree
   draggable
   :allow-drop="allowDrop"
   @node-drop="sort"
   ref="tree"
   :data="data2"
   :props="defaultProps"
   show-checkbox
   default-expand-all
   node-key="id"
   highlight-current
  ></el-tree>
 
  <div class="buttons">
   <el-button @click="getCheckedNodes">通過 node 獲取</el-button>
   <el-button @click="getCheckedKeys">通過 key 獲取</el-button>
   <el-button @click="setCheckedNodes">通過 node 設定</el-button>
   <el-button @click="setCheckedKeys">通過 key 設定</el-button>
   <el-button @click="resetChecked">清空</el-button>
  </div>
 </div>
</template>
 
<script>
// import draggable from "vuedraggable";
// import Sortable from "sortablejs";
export default {
 methods: {
  getCheckedNodes() {
   console.log(this.$refs.tree.getCheckedNodes());
  },getCheckedKeys() {
   console.log(this.$refs.tree.getCheckedKeys());
  },setCheckedNodes() {
   this.$refs.tree.setCheckedNodes([
    {
     id: 5,label: "二級 2-1"
    },{
     id: 9,label: "三級 1-1-1"
    }
   ]);
  },setCheckedKeys() {
   this.$refs.tree.setCheckedKeys([3]);
  },resetChecked() {
   this.$refs.tree.setCheckedKeys([]);
  }
 },mounted() {
  const el = document.querySelectorAll(".el-tree")[0];
  console.log(el);
 },data() {
  return {
   data2: [
    {
     id: 1,label: "一級 1",children: [
      {
       id: 4,label: "二級 1-1",prop: "4"
      }
     ]
    },{
     id: 2,label: "一級 2",children: [
      {
       id: 5,label: "二級 2-1",prop: "5"
      },{
       id: 6,label: "二級 2-2",prop: "6"
      }
     ]
    },{
     id: 3,label: "一級 3",children: [
      {
       id: 7,label: "二級 3-1",prop: "7"
      },{
       id: 8,label: "二級 3-2",prop: "9"
      }
     ]
    },label: "一級4"
    }
   ],defaultProps: {
    children: "children",label: "label"
   },allowDrop(draggingNode,type) {
    if (draggingNode.level === dropNode.level) {
     if (draggingNode.parent.id === dropNode.parent.id) {
      // 向上拖拽 || 向下拖拽
      return type === "prev" || type === "next";
     }
    } else {
     // 不同級進行處理
     return false;
    }
   },sort(draggingNode,event) {
    // console.log('排序')
    // console.log("<><><>>><><<><><><><><><><>")
    // 拖拽之後的重新組合的陣列
    // console.log(dropNode.parent); //dropNode.parent.childNodes =[]
    let obj = {
     aboveId: "",arr: []
    };
    obj.aboveId = dropNode.data.aboveId;
    for (let item of dropNode.parent.childNodes) {
     obj.arr.push(item.data.id);
    }
   }
  };
 }
};
</script>

以上這篇vue elementui tree 任意級別拖拽功能程式碼就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支援我們。