zTree下拉菜单实例

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zTree

zTree

<!DOCTYPE html>
<html>
<head>
<title>ztree01.html</title>

<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">


<script type="text/javascript"
	src="C:\Users\Administrator\Desktop\jquery-1.9.0.js"></script>

 <link rel="stylesheet" type="text/css" href="../resources/css/ztree/zTreeStyle.css"/> 
     

<script type="text/javascript"
	src="../resources/js/tree/jquery.ztree.core-3.5.js"></script>

<script type="text/javascript">
	
	
	var setting={
		view:{dblClickExpand:false},
		data:{simpleData:{enable:true}},
		callback:{
		beforeClick:beforeClick, 
		onClick:onClick}
		};
		
	var zNodes=[
			{id:1, pId:0, name:"北京"},
			{id:2, pId:0, name:"天津"},
			{id:3, pId:0, name:"上海"},
			{id:6, pId:0, name:"重庆"},
			{id:4, pId:0, name:"河北省", open:true},
			{id:41, pId:4, name:"石家庄"},
			{id:42, pId:4, name:"保定"},
			{id:43, pId:4, name:"邯郸"},
			{id:44, pId:4, name:"承德"},
			{id:5, pId:0, name:"广东省", open:true},
			{id:51, pId:5, name:"广州"},
			{id:52, pId:5, name:"深圳"},
			{id:53, pId:5, name:"东莞"},
			{id:54, pId:5, name:"佛山"},
			{id:6, pId:0, name:"福建省", open:true},
			{id:61, pId:6, name:"福州"},
			{id:62, pId:6, name:"厦门"},
			{id:63, pId:6, name:"泉州"},
			{id:64, pId:6, name:"三明"}
	];	
	
		function beforeClick(treeId, treeNode) {
			var check = (treeNode && !treeNode.isParent);
			if (!check) alert("只能选择城市...");
			return check;
		}
	
	
	function showMenu(){
		var cityObj=$("#citySel");
		var cityOffset=$("#citySel").offset();
		$("#menuContent").css({left:cityOffset.left + "px", top:cityOffset.top + cityObj.outerHeight() + "px"}).slideDown("fast");
	
		$("body").bind("mousedown",onBodyDown);
	}
	
	
	
	//onClick必须在setting里面的callback里面设置，设置onClick：onClick
	function onClick(e, treeId, treeNode){
		//获取ztree对象，treeDemo是显示下拉列表的dom的id值
		var zTree=$.fn.zTree.getZTreeObj("treeDemo");
		nodes=zTree.getSelectedNodes();
		console.log(nodes);
		v="";
		nodes.sort(function compare(a,b){
			return a.id-b.id;
		});
		
		//遍历选中的nodes的值，加入到v中。 v会被加入citySel input节点中。
		for(var i=0,l=nodes.length;i<l;i++){
			v+=nodes[i].name+",";
		}
		 
		//去掉最后面的','号
		if(v.length>0) v=v.substring(0,v.length-1);
		var cityObj=$("#citySel");
		
		//cityObj是id为citySel的input节点。 选中treeNode的时候，就会将input的值变为选中的值
		cityObj.attr("value",v);
	}
	
	function onBodyDown(event){
		//alert("onBodyDown");
		if(!(event.target.id=="menuBtn"||event.target.id=="menuContent"||
		$(event.target).parents("#menuContent").length>0)){
		hideMenu()};
	}
	
	function hideMenu(){
		$("#menuContent").fadeOut("fast");
		$("body").unbind("mousedown",onBodyDown);
	}
	
	
	$(function(){
		console.log(zNodes);
		$.fn.zTree.init($("#treeDemo"),setting,zNodes);
	
	});
	
	
		 
</script>


</head>

<body>
	 <h1>下拉菜单</h1>
	 <div class="content_wrap">
	 	<ul class="list">
	 		<li class="title">&nbsp;&nbsp;<span class="highlight_red">选择城市时，</span></li>
	 		<li class="title">&nbsp;&nbsp;城市:<input id="citySel" type="text" readonly="readonly" value=""
	 		style="width:120px;"/> &nbsp;
	 		<a id="menuBtn" href="#" onclick="showMenu();return false;">选择</a></li>
	 	</ul>
	 </div>
	
	<div id="menuContent" class="menuContent" style="display:none;position:absolute;">
		<ul id="treeDemo" class="ztree" style="margin-top:0;width:160px;"></ul>
	</div>
	
	
</body>
</html>

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