关于前端:ztree-实现树同级拖动节点删除保存结构

ztree.js 如何实现树结构程序的实时存储，通过和后端一番的探讨后，最终定下了在触发拖动的时候调用接口存储同级下的节点程序，并且只能同级拖动：

  function beforeDrop(treeId, treeNodes, targetNode, moveType) {    var moveNode = treeNodes[0];    switch (moveType) {      case "prev":      case "next":        if (moveNode.parentId == targetNode.parentId) {          //只能同级拖动          return true;        }        break;      // case "inner":      //     if (moveNode.parentId == targetNode.parentId) {      //       return true;      //     }      //     break;    }    return false;  }    function singleCick(event, tree, treeNode) {    var nodes = treeObj.getSelectedNodes();    //设置父节点不能被抉择    if (tree.children) {      return false;    }    if (nodes.length > 0) {      treeNodeData = nodes[0];    }  }    //保留节点的排序程序  function saveNodesSort(currNode) {    var currLevelNodes = currNode.getParentNode().children; //获取同级的所有节点    var currLevelNodesIds =      currLevelNodes &&      currLevelNodes.map(function (item, idx) {        return item.id;      });    $.ajax({      url: "/savesort.api",      method: "get",      data: {        ids: currLevelNodesIds.join(),      },      success: function (res) {        if (res.code == 0) {          console.log("排序保留胜利");        }      },      error: function (res) {        layer.msg(res.desc);      },    });  }    var setting = {    callback: {      onClick: zTreeOnClick,      beforeClick: singleCick,      beforeDrop: beforeDrop,      onDrop: function (        event,        treeId,        treeNodes,        targetNode,        moveType,        isCopy      ) {        //拖动实现保留程序        saveNodesSort(treeNodes[0]);      },      beforeRemove: function (treeId, treeNode) {        var zTree = $.fn.zTree.getZTreeObj(treeId);        layer.confirm(          "是否删除" + treeNode.name+"，删除后无奈复原",          {            btn: ["确定", "勾销"],          },          function (index) {            zTree.removeNode(treeNode);            layer.close(index);            deleteNode(treeNode.id);          }        );        return false;      },    },    view: {      selectedMulti: false,    },    edit: {      enable: true,      showRemoveBtn: function (treeId, treeNode) { //父节点不显示删除按钮        return !treeNode.isParent;      },      showRenameBtn: false,      drag: {        prev: true,        next: true,        inner: false,        isCopy: false,        isMove: true,      },    },  };    var ztreeObj = $.fn.zTree.init($("#treeDemo"), setting, [treeData]);