setting.callback.beforeCheck.html
1.3 KB
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<h2><span>Function(treeId, treeNode)</span><span class="path">setting.callback.</span>beforeCheck</h2>
<h3>概述<span class="h3_info">[ 依赖 <span class="highlight_green">jquery.ztree.excheck</span> 扩展 js ]</span></h3>
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<p></p>
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<p>用于捕获 勾选 或 取消勾选 之前的事件回调函数,并且根据返回值确定是否允许 勾选 或 取消勾选 </p>
<p>默认值:null</p>
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<h3>Function 参数说明</h3>
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<h4><b>treeId</b><span>String</span></h4>
<p>对应 zTree 的 <b class="highlight_red">treeId</b>,便于用户操控</p>
<h4 class="topLine"><b>treeNode</b><span>JSON</span></h4>
<p>进行 勾选 或 取消勾选 的节点 JSON 数据对象</p>
<h4 class="topLine"><b>返回值</b><span>Boolean</span></h4>
<p>返回值是 true / false</p>
<p class="highlight_red">如果返回 false,将不会改变勾选状态,并且无法触发 onCheck 事件回调函数</p>
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<h3>setting & function 举例</h3>
<h4>1. 禁止所有勾选操作,保持初始化的勾选状态</h4>
<pre xmlns=""><code>function zTreeBeforeCheck(treeId, treeNode) {
return false;
};
var setting = {
callback: {
beforeCheck: zTreeBeforeCheck
}
};
......</code></pre>
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