portal-common/src/main/webapp/common/thirdparty/zTree/api/cn/treeNode.getPreNode.html

   1 <div class="apiDetail">\r
   2 <div>\r
   3         <h2><span>Function()</span><span class="path">treeNode.</span>getPreNode</h2>\r
   4         <h3>概述<span class="h3_info">[ 依赖 <span class="highlight_green">jquery.ztree.core</span> 核心 js ]</span></h3>\r
   5         <div class="desc">\r
   6                 <p></p>\r
   7                 <div class="longdesc">\r
   8                         <p>获取与 treeNode 节点相邻的前一个节点。</p>\r
   9                         <p class="highlight_red">初始化节点数据时，由 zTree 增加此属性，请勿提前赋值</p>\r
  10                 </div>\r
  11         </div>\r
  12         <h3>Function 参数说明</h3>\r
  13         <div class="desc">\r
  14         <h4><b>返回值</b><span>JSON</span></h4>\r
  15         <p>与 treeNode 节点相邻的前一个节点。</p>\r
  16         <p class="highlight_red">如果 treeNode 是第一个节点，返回 null 。</p>\r
  17         </div>\r
  18         <h3>treeNode 举例</h3>\r
  19         <h4>1. 获取当前被选中的节点的前一个节点</h4>\r
  20         <pre xmlns=""><code>var treeObj = $.fn.zTree.getZTreeObj("tree");\r
  21 var sNodes = treeObj.getSelectedNodes();\r
  22 if (sNodes.length > 0) {\r
  23         var node = sNodes[0].getPreNode();\r
  24 }\r
  25 </code></pre>\r
  26 </div>\r
  27 </div>