本文主要介紹了jQuery插件zTree實現清空選中第一個節點所有子節點的方法,涉及jQuery樹形插件zTree針對節點的遍歷與移除相關操作技巧,需要的朋友可以參考下，希望能幫助到大家。
本文實例講述了jQuery外掛zTree實作清空選取第一個節點所有子節點的方法。分享給大家供大家參考，具體如下：
1、實作程式碼：
<!DOCTYPE html>
<html>
<head>
<title>zTree实现基本树</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<link rel="stylesheet" type="text/css" href="zTree_v3/css/demo.css" rel="external nofollow" >
<link rel="stylesheet" type="text/css" href="zTree_v3/css/zTreeStyle/zTreeStyle.css" rel="external nofollow" >
<script type="text/javascript" src="zTree_v3/js/jquery-1.4.4.min.js"></script>
<script type="text/javascript" src="zTree_v3/js/jquery.ztree.core.min.js"></script>
<script type="text/javascript">
<!--
var setting = {
data: {
simpleData: {
enable: true
}
}
};
var zNodes =[
{ id:1, pId:0, name:"湖北省", open:true},
{ id:11, pId:1, name:"武汉市", open:true},
{ id:111, pId:11, name:"汉口"},
{ id:112, pId:11, name:"汉阳"},
{ id:113, pId:11, name:"武昌"},
{ id:12, pId:1, name:"黄石市"},
{ id:121, pId:12, name:"黄石港区"},
{ id:122, pId:12, name:"西塞山区"},
{ id:123, pId:12, name:"下陆区"},
{ id:124, pId:12, name:"铁山区"},
{ id:13, pId:1, name:"黄冈市"},
{ id:131, pId:13, name:"黄州区"},
{ id:132, pId:13, name:"麻城市"},
{ id:133, pId:13, name:"武穴市"},
{ id:134, pId:13, name:"团风县"},
{ id:135, pId:13, name:"浠水县"},
{ id:136, pId:13, name:"罗田县"},
{ id:137, pId:13, name:"英山县"},
{ id:2, pId:0, name:"湖南省", open:true},
{ id:21, pId:2, name:"长沙市", open:true},
{ id:211, pId:21, name:"芙蓉区"},
{ id:212, pId:21, name:"天心区"},
{ id:213, pId:21, name:"岳麓区"},
{ id:214, pId:21, name:"开福区"},
{ id:22, pId:2, name:"株洲市"},
{ id:221, pId:22, name:"天元区"},
{ id:222, pId:22, name:"荷塘区"},
{ id:223, pId:22, name:"芦淞区"},
{ id:224, pId:22, name:"石峰区"}
];
$(document).ready(function(){
$.fn.zTree.init($("#baseTree"), setting, zNodes);
});
/**
* 清空选中的第一个节点的子节点
*/
function removeChildNodesTree()
{
var treeObj = $.fn.zTree.getZTreeObj("baseTree");
//获取全部节点数据
var nodes = treeObj.getNodes();
for (var i=0, l=nodes.length; i < l; i++)
{
//清空选中的第一个节点的子节点
treeObj.removeChildNodes(nodes[i]);
}
}
//-->
</script>
</head>
<body>
<p class="content_wrap">
<p class="zTreeDemoBackground left">
<ul id="baseTree" class="ztree" style="height: 300px; width:200px; overflow-y: auto"></ul>
<input type="button" id="btn" onclick="removeChildNodesTree()" value="清空选中的第一个节点的子节点"/>
</p>
</p>
</body>
</html>2、實作效果圖：
（1）初始化
（2）點選按鈕
3、原始碼說明：
//清空选中的第一个节点的子节点 treeObj.removeChildNodes(nodes[i]);
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