jQuery中ztree 点击文本框弹出下拉框的实例代码

<link rel="stylesheet" href="${ctx}/res/js/ztree/css/demo.css" type="text/css"/> <link rel="stylesheet" href="${ctx}/res/js/ztree/css/zTreeStyle/zTreeStyle.css" type="text/css"/> <script type="text/javascript" src="${ctx}/res/js/ztree/js/jquery.ztree.core-3.5.js"></script> 

<input onclick="showMenu();return false;"/> 

var setting = {   view: {     dblClickExpand: false   },   data: {     simpleData: {       enable: true     }   },   callback: {     onClick: onClick   } };  function onClick(e, treeId, treeNode) {   var zTree = $.fn.zTree.getZTreeObj("treeDemo"),   nodes = zTree.getSelectedNodes();   menuName = "";   menuId = "";   nodes.sort(function compare(a,b){return a.id-b.id;});     var isParent = nodes[0].getParentNode();   var isChildren = nodes[0].children;      if((!isParent && !isChildren) || (isParent)){     for (var i=0, l=nodes.length; i<l; i++) {       menuName += nodes[i].name + ",";       menuId += nodes[i].id + ",";      }     if (menuName.length > 0 ) menuName = menuName.substring(0, menuName.length-1);     if (menuId.length > 0 ) menuId = menuId.substring(0, menuId.length-1);         $("#menuName").val(menuName);     $("#menuId").val(menuId);   } }  function showMenu() {   var cityObj = $("#menuName");   var cityOffset = $("#menuName").offset();   $("#menuContent").css({left:cityOffset.left + "px", top:cityOffset.top + cityObj.outerHeight() + "px"}).slideDown("fast") $("body").bind("mousedown", onBodyDown);    var width = cityObj.css("width");   $("#treeDemo").css("width",parseInt(width)-5); } function hideMenu() {   $("#menuContent").fadeOut("fast");   $("body").unbind("mousedown", onBodyDown); } function onBodyDown(event) {  if (!(event.target.id == "menuContent" || $(event.target).parents("#menuContent").length>0)) {     hideMenu();   }   }  $(document).ready(function(){   $.fn.zTree.init($("#treeDemo"), setting, zNodes); });