<div class="apiDetail">
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<h2><span>Function(expandFlag)</span><span class="path">zTreeObj.</span>expandAll</h2>
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<h3>Overview<span class="h3_info">[ depends on <span class="highlight_green">jquery.ztree.core</span> js ]</span></h3>
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<div class="desc">
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<p></p>
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<div class="longdesc">
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<p>Expand or collapse all nodes.</p>
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<p class="highlight_red">This method does not trigger 'beforeExpand / onExpand' or 'beforeCollapse / onCollapse' callback function.</p>
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<p class="highlight_red">Please use zTree object to executing the method.</p>
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<h3>Function Parameter Descriptions</h3>
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<div class="desc">
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<h4><b>expandFlag</b><span>Boolean</span></h4>
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<p>expandFlag = true means: expand all nodes.</p>
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<p>expandFlag = false means: collapse all nodes.</p>
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<h4 class="topLine"><b>Return </b><span>Boolean</span></h4>
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<p>return the result of expand or collapse.</p>
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<p>true means: expand all nodes</p>
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<p>false means: collapse all nodes</p>
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<p>null means: have no parent node to expand or collapse.</p>
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<h3>Examples of function</h3>
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<h4>1. Expand all nodes</h4>
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<pre xmlns=""><code>var treeObj = $.fn.zTree.getZTreeObj("tree");
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treeObj.expandAll(true);
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</code></pre>
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