tba-gx-guochan/public/static/plugins/zTree_v3/api/en/setting.callback.beforeClick.html

<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>Before click callback, return false to prevent 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>.</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 myBeforeClick(treeId, treeNode, clickFlag) {
    return (treeNode.id !== 1);
};
var setting = {
	callback: {
		beforeClick: myBeforeClick
	}
};
......</code></pre>
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