var treeSetting = {
 async: {
 enable: true, <a href="http://my.oschina.net/wealpan/admin/"xxx/demo.do?method=listByTree" rel="nofollow">url:"xxx/demo.do?method=listByTree</a>",
 dataType:"json",
 autoParam:["id=pid"]
 },
 view: {
 dblClickExpand: true,
 selectedMulti: false,
 expandSpeed: ($.browser.msie && parseInt($.browser.version)<=6)?"":"fast"
 },
 data: {
 simpleData: {
  enable:true,
  idKey: "id",
  pIdKey: "pid",
  rootPId: "root"
 }
 },
 callback: {
 onNodeCreated: zTreeOnNodeCreated
 }
};
 
//默认根结点
var rootNode = {"id":0, "pid":"root", "name":"商品分类", "open":true, "isParent":true};
 
$(document).ready(function(){
 var zTreeObj = $.fn.zTree.init($("#tree"), treeSetting, rootNode);
 var node = zTreeObj.getNodeByParam("id", 0, null);
 zTreeObj.reAsyncChildNodes(node, "refresh");
});

function searchM() {
 var param = $.trim($("input[name='param']").val());
 var treeObj = $.fn.zTree.getZTreeObj("tree");
 var node = treeObj.getNodeByParam("id", 0, null);
 if(param != ""){
 param = encodeURI(encodeURI(param));
 treeObj.setting.async.otherParam=["param", param];
 }else {
 //搜索参数为空时必须将参数数组设为空
 treeObj.setting.async.otherParam=[];
 }
 treeObj.reAsyncChildNodes(node, "refresh");
}
 
function zTreeOnNodeCreated(event, treeId, treeNode) {
 var param <span></span><span></span>= $.tr<span></span>im($("input[name='param']").val());
 var treeObj = $.fn.zTree.getZTreeObj("tree");
 //只有搜索参数不为空且该节点为父节点时才进行异步加载
 if(param != "" && treeNode.isParent){
 treeObj.reAsyncChildNodes(treeNode, "refresh");
 } 
};