zTree实现可搜索功能（升级版）

黄舟原创: 2017-02-16 13:48:27 1534浏览

1、问题背景

（1）生成zTree

（2）点击节点选中并给输入框赋值

（3）输入某个字符，树节点含有该字符被选中，颜色发生变化

2、实现源码

<!DOCTYPE html>
<html>
<head>
	<title>zTree具有搜索功能</title>
	<meta http-equiv="content-type" content="text/html; charset=UTF-8">
	<link rel="stylesheet" href="../../../css/demo.css" type="text/css">
	<link rel="stylesheet" href="../../../css/zTreeStyle/zTreeStyle.css" type="text/css">
	<script type="text/javascript" src="../../../js/jquery-1.4.4.min.js"></script>
	<script type="text/javascript" src="../../../js/jquery.ztree.core.js"></script>
	<script type="text/javascript">
		var setting = {
			view: {
				showIcon:false,
				showTitle: false,
				showLine: true,
				fontCss: setFontCss
			},
			callback: {
				onClick: zTreeOnClick
			}
		};

		var zNodes =[
			{id:"0",name:"树", open:true,
				children: [
					{id:"01",name:"灌木",open:true,
						children: [
							{id:"010",name:"银杏"},
							{id:"011",name:"桑树"},
							{id:"012",name:"红树"},
							{id:"013",name:"榕树"}
						]},
					{id:"02",name:"乔木",open:true,
						children: [
							{id:"020",name:"杨树"},
							{id:"021",name:"槐树"},
							{id:"022",name:"杉木"},
							{id:"023",name:"松树"}
						]}
				]}
		];

		$(document).ready(function(){
			$.fn.zTree.init($("#tree"), setting, zNodes);
			
			$("#dataBtn").keyup(function(){
				var dt = $(this).val();
				setColor('tree','name',dt);
			});
		});
		
		function setColor(id,key,value){  
		    treeId = id;  
		    if(value != "")
		    {
		        var treeObj = $.fn.zTree.getZTreeObj(treeId);  
		        nodeList = treeObj.getNodesByParamFuzzy(key, value);  
		        if(nodeList && nodeList.length>0)
		        {
		            updateNodes(true,nodeList,treeId);  
		        }  
		    }  
		}  
		
		function updateNodes(highlight,nodeList,treeId) {  
		    var treeObj = $.fn.zTree.getZTreeObj(treeId);  
		    for( var i=0; i<nodeList.length;i++) 
		    {
		        nodeList[i].highlight = highlight;  
		        treeObj.updateNode(nodeList[i]);  
		    }  
		}  
		
		function setFontCss(treeId, treeNode) 
		{
			 return (!!treeNode.highlight) ? {color:"#0000FF", "font-weight":"bold","font-size":"14px"} : {color:"#333", "font-weight":"normal"};  
		};
		
		function zTreeOnClick(event, treeId, treeNode) {
			var zTree = $.fn.zTree.getZTreeObj("tree")
			var views = zTree.setting.view;
			$("#dataBtn").val(treeNode.name);
			views["fontCss"] = reSetFontCss;
		};
		
		function reSetFontCss(treeId, treeNode)
		{
			return (!treeNode.click)?{color:"#000000", "font-weight":"normal"}:{}; 
		}
	</script>
</head>

<body style="padding: 20px;">
	<p>
		<input type="text" id="dataBtn" style="width: 227px;"/>
	</p>
	<p class="content_wrap">
		<p class="zTreeDemoBackground left">
			<ul id="tree" class="ztree"></ul>
		</p>
	</p>
</body>
</html>

3、实现结果

（1）初始化时

（2）点击节点

（3）输入某个字符

4、问题分析

（1）缺陷

输入框输入某个字符，节点颜色发生变化，但是无法重置（恢复原来的颜色）

5、修复bug

<!DOCTYPE html>  
<html>  
<head>  
    <title>zTree具有搜索功能</title>  
    <meta http-equiv="content-type" content="text/html; charset=UTF-8">  
    <link rel="stylesheet" href="../../../css/demo.css" type="text/css">  
    <link rel="stylesheet" href="../../../css/zTreeStyle/zTreeStyle.css" type="text/css">  
    <script type="text/javascript" src="../../../js/jquery-1.4.4.min.js"></script>  
    <script type="text/javascript" src="../../../js/jquery.ztree.core.js"></script>  
    <script type="text/javascript">  
        var setting = {  
            view: {  
                showIcon:false,  
                showTitle: false,  
                showLine: true,  
                fontCss: setFontCss  
            },  
            callback: {  
                onClick: zTreeOnClick  
            }  
        };  
  
        var zNodes =[  
            {id:"0",name:"树", open:true,  
                children: [  
                    {id:"01",name:"灌木",open:true,  
                        children: [  
                            {id:"010",name:"银杏"},  
                            {id:"011",name:"桑树"},  
                            {id:"012",name:"红树"},  
                            {id:"013",name:"榕树"}  
                        ]},  
                    {id:"02",name:"乔木",open:true,  
                        children: [  
                            {id:"020",name:"杨树"},  
                            {id:"021",name:"槐树"},  
                            {id:"022",name:"杉木"},  
                            {id:"023",name:"松树"}  
                        ]}  
                ]}  
        ];  
  
        $(document).ready(function(){  
            $.fn.zTree.init($("#tree"), setting, zNodes);  
              
            $("#dataBtn").keyup(function(){  
            	var zTree = $.fn.zTree.getZTreeObj("tree");
           		var views = zTree.setting.view; 
           		views["fontCss"] = setFontCss;
                var dt = $(this).val();  
                setColor('tree','name',dt);  
            });  
        });  
          
        function setColor(id,key,value){    
            treeId = id;    
            if(value != "")  
            {  
                var treeObj = $.fn.zTree.getZTreeObj(treeId);    
                nodeList = treeObj.getNodesByParamFuzzy(key, value);    
                if(nodeList && nodeList.length>0)  
                {  
                    updateNodes(true,nodeList,treeId);    
                }    
            } 
            else
            {
            	var treeObj = $.fn.zTree.getZTreeObj(treeId);  
            	var views = treeObj.setting.view; 
           		views["fontCss"] = reSetFontCss;
           		treeObj.refresh();
            }
        }    
          
        function updateNodes(highlight,nodeList,treeId) {    
            var treeObj = $.fn.zTree.getZTreeObj(treeId);    
            for( var i=0; i<nodeList.length;i++)   
            {  
                nodeList[i].highlight = highlight;    
                treeObj.updateNode(nodeList[i]);    
            }    
        }    
          
        function setFontCss(treeId, treeNode)   
        {  
             return (!!treeNode.highlight) ? {color:"#0000FF", "font-weight":"bold","font-size":"14px"} : {color:"#000", "font-weight":"normal"};    
        };  
          
        function zTreeOnClick(event, treeId, treeNode) {  
            var zTree = $.fn.zTree.getZTreeObj("tree");
            var views = zTree.setting.view;  
            $("#dataBtn").val(treeNode.name);  
            views["fontCss"] = reSetFontCss;  
            zTree.refresh();
        };  
          
        function reSetFontCss(treeId, treeNode)  
        {  
            return (!treeNode.highlight)?{color:"#000000", "font-weight":"normal"}:{};   
        }  
    </script>  
</head>  
  
<body style="padding: 20px;">  
    <p>  
        <input type="text" id="dataBtn" style="width: 227px;"/>  
    </p>  
    <p class="content_wrap">  
        <p class="zTreeDemoBackground left">  
            <ul id="tree" class="ztree"></ul>  
        </p>  
    </p>  
</body>  
</html>

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