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- <div class="apiDetail">
- <div>
- <h2><span>Function(treeId, treeNode)</span><span class="path">setting.callback.</span>beforeCheck</h2>
- <h3>Overview<span class="h3_info">[ depends on <span class="highlight_green">jquery.ztree.excheck</span> js ]</span></h3>
- <div class="desc">
- <p></p>
- <div class="longdesc">
- <p>Used to capture the event before check or uncheck node, zTree based on return value to determine whether to change check state.</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 checked or unchecked</p>
- <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 check state, and will not trigger the 'onCheck' callback.</p>
- </div>
- <h3>Examples of setting & function</h3>
- <h4>1. disable to change check state of all nodes, and keep the check state initialization</h4>
- <pre xmlns=""><code>function zTreeBeforeCheck(treeId, treeNode) {
- return false;
- };
- var setting = {
- callback: {
- beforeCheck: zTreeBeforeCheck
- }
- };
- ......</code></pre>
- </div>
- </div>
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