Detailed explanation of the method of clearing the selected first node and all child nodes in zTree-JS Tutorial-php.cn

Detailed explanation of the method of clearing the selected first node and all child nodes in zTree

小云云

Release： 2018-05-24 10:07:29

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This article mainly introduces the method of jQuery plug-in zTree to clear all the child nodes of the selected first node. It involves the jQuery tree plug-in zTree's related operation skills for node traversal and removal. Friends who need it can refer to it. I hope it can help. to everyone.

The example in this article describes the method of jQuery plug-in zTree to clear all child nodes of the selected first node. Share it with everyone for your reference, the details are as follows:

1. Implementation code:

<!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>

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2. Implementation renderings:

(1) Initialization

(2) Click the button

3. Source code description:

//清空选中的第一个节点的子节点
treeObj.removeChildNodes(nodes[i]);

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