zTree 簡介

    zTree 是一個依靠 jQuery 實現的多功能 “樹插件”。優異的性能、靈活的配置、多種功能的組合是 zTree 最大優點。

    zTree 是開源免費的軟件（MIT 許可證）。如果您對 zTree 感興趣或者愿意資助 zTree 繼續發展下去，可以進行捐助。

原始問題

//添加結點, 產品和版本function addNode(event) {  rMenu.css({ "visibility": "hidden" });  var treeNode = zTree.getSelectedNodes()[0];  var pid;  var nodeName;  var treelevel;  if (!treeNode && event.target.tagName.toLowerCase() != "button" && $(event.target).parents("a").length == 0) {   //添加產品結點pid = 0;   treeNode = null;   treelevel = 1;  } else if (treeNode) {   //添加版本結點pid = treeNode.id;  treelevel = 2;  }  $.post(   "AddNode.action",   { type: treelevel, id: pid },   function(nodeIdAndName) {    var params = /([^/|]+)/|([^/|]+)/.exec(nodeIdAndName);    if (!((!treeNode && event.target.tagName.toLowerCase() != "button" && $(event.target).parents("a").length == 0) || treeNode.open)) {     zTree.expandNode(treeNode, true);    }    treeNode = zTree.addNodes(treeNode, { id: params[1], pid: pid, isParent: "true", name: params[2], editable: "true", treelevel: treelevel });   });}

原本直接添加子節點的時候，如果父節點沒有展開，會添加兩個一樣的子節點（第一次的時候）；后來我對父節點是否展開進行了判斷，但是卻變成了如果父節點展開，會添加兩個一樣的子節點（第一次的時候），這個問題要怎么解決呢？

辦法一 

將

if (!((!treeNode && event.target.tagName.toLowerCase() != "button" && $(event.target).parents("a").length == 0) || treeNode.open)) {     zTree.expandNode(treeNode, true);    }    treeNode = zTree.addNodes(treeNode, { id: params[1], pid: pid, isParent: "true", name: params[2], editable: "true", treelevel: treelevel });

改成

if(!treeNode && event.target.tagName.toLowerCase() != "button" && $(event.target).parents("a").length == 0)    {     treeNode = zTree.addNodes(treeNode, { id: params[1], pid: pid, isParent: "true", name: params[2], editable: "true", treelevel: treelevel });    }    else if(treeNode.open)    {     if(treeNode.isParent)     {      zTree.reAsyncChildNodes(treeNode, "refresh");     }     else     {      treeNode.isParent=true;      zTree.reAsyncChildNodes(treeNode, "refresh");     }    }    else    {     zTree.expandNode(treeNode, true);     treeNode = zTree.addNodes(treeNode, { id: params[1], pid: pid, isParent: "true", name: params[2], editable: "true", treelevel: treelevel });    }