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+<div class="apiDetail">
+<div>
+ <h2><span>Function(event, treeId, treeNodes)</span><span class="path">setting.callback.</span>onDrag</h2>
+ <h3>概述<span class="h3_info">[ 依赖 <span class="highlight_green">jquery.ztree.exedit</span> 扩展 js ]</span></h3>
+ <div class="desc">
+ <p></p>
+ <div class="longdesc">
+ <p>用于捕获节点被拖拽的事件回调函数</p>
+ <p class="highlight_red">如果设置了 setting.callback.beforeDrag 方法,且返回 false,将无法触发 onDragMove 和 onDrag 事件回调函数。</p>
+ <p>默认值:null</p>
+ </div>
+ </div>
+ <h3>Function 参数说明</h3>
+ <div class="desc">
+ <h4><b>event</b><span>js event 对象</span></h4>
+ <p>标准的 js event 对象</p>
+ <h4 class="topLine"><b>treeId</b><span>String</span></h4>
+ <p>被拖拽的节点 treeNodes 所在 zTree 的 <b class="highlight_red">treeId</b>,便于用户操控</p>
+ <h4 class="topLine"><b>treeNodes</b><span>Array(JSON)</span></h4>
+ <p>要被拖拽的节点 JSON 数据集合</p>
+ </div>
+ <h3>setting & function 举例</h3>
+ <h4>1. 每次开始进行拖拽节点后, 弹出被拖拽节点的个数信息</h4>
+ <pre xmlns=""><code>function zTreeOnDrag(event, treeId, treeNodes) {
+ alert(treeNodes.length);
+};
+var setting = {
+ callback: {
+ onDrag: zTreeOnDrag
+ }
+};
+......</code></pre>
+</div>
+</div> \ No newline at end of file