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+<div class="apiDetail">
+<div>
+	<h2><span>Function(treeId, treeNode, clickFlag)</span><span class="path">setting.callback.</span>beforeClick</h2>
+	<h3>Overview<span class="h3_info">[ depends on <span class="highlight_green">jquery.ztree.core</span> js ]</span></h3>
+	<div class="desc">
+		<p></p>
+		<div class="longdesc">
+			<p>Used to capture the event before click node, zTree based on return value to determine whether to trigger the 'onClick' callback.</p>
+			<p>Default: null</p>
+		</div>
+	</div>
+	<h3>Function Parameter Descriptions</h3>
+	<div class="desc">
+	<h4><b>treeId</b><span>String</span></h4>
+	<p>zTree unique identifier: <b class="highlight_red">treeId</b>, easy for users to control.</p>
+	<h4 class="topLine"><b>treeNode</b><span>JSON</span></h4>
+	<p>JSON data object of the node which is clicked</p>
+	<h4 class="topLine"><b>clickFlag</b><span>Number</span></h4>
+	<p>Node is selected or deselected state, please see table below for details</p>
+	<table width="100%" border="0" cellspacing="1" cellpadding="0">
+		<thead><tr><td>clickFlag</td><td title="Whether to allow multi-select">selectedMulti</td><td title="Whether to press Ctrl-key or Cmd-key">autoCancelSelected<br/>&&<br/>event.ctrlKey / metaKey</td><td title="Node's selection state">isSelected</td><td>operate for selected</td></tr></thead>
+		<tbody>
+			<tr><td>1</td><td>true</td><td>false</td><td>false</td><td>node is selected (single)</td></tr>
+			<tr><td>1</td><td>true</td><td>false</td><td>true</td><td>node is selected (single)</td></tr>
+			<tr><td>2</td><td>true</td><td>true</td><td>false</td><td>node is selected (multi)</td></tr>
+			<tr><td>0</td><td>true</td><td>true</td><td>true</td><td>node is deselected</td></tr>
+			<tr><td>1</td><td>false</td><td>false</td><td>false</td><td>node is selected (single)</td></tr>
+			<tr><td>1</td><td>false</td><td>false</td><td>true</td><td>node is selected (single)</td></tr>
+			<tr><td>1</td><td>false</td><td>true</td><td>false</td><td>node is selected (single)</td></tr>
+			<tr><td>0</td><td>false</td><td>true</td><td>true</td><td>node is deselected</td></tr>
+		</tbody>
+	</table>
+	<h4 class="topLine"><b>Return </b><span>Boolean</span></h4>
+	<p>return true or false</p>
+	<p class="highlight_red">If return false, zTree will not change selected state, and will not trigger the 'onClick' callback.</p>
+	</div>
+	<h3>Examples of setting & function</h3>
+	<h4>1. disabled to click the node</h4>
+	<pre xmlns=""><code>function zTreeBeforeClick(treeId, treeNode, clickFlag) {
+    return (treeNode.id !== 1);
+};
+var setting = {
+	callback: {
+		beforeClick: zTreeBeforeClick
+	}
+};
+......</code></pre>
+</div>
+</div>
+\ No newline at end of file