tba-gx-guochan/public/static/plugins/zTree_v3/api/en/treeNode.open.html

<div class="apiDetail">
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        <h2><span>Boolean</span><span class="path">treeNode.</span>open</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 record the parent node's expand status.</p>
                <p class="highlight_red">1. When zTree initialize the node data, if you set treeNode.open = true, zTree
                    will default expand this parent node.</p>
                <p class="highlight_red">2. Leaf node's 'open' attribute is false.</p>
                <p class="highlight_red">3. In order to solve the problem of someone make json data, supporting "false",
                    "true" format of the data string.</p>
                <p class="highlight_red">4. When setting.async.enable = false, the parent node will be expanded which
                    have no child nodes and its attribute 'open' is true. (v3.5.15+) </p>
                <p>Default: false</p>
            </div>
        </div>
        <h3>Boolean Format</h3>
        <div class="desc">
            <p> true means: the parent node is expanded.</p>
            <p> false means: the parent node is collapsed.</p>
        </div>
        <h3>Examples of treeNode</h3>
        <h4>1. Get the first selected node's expand status.</h4>
        <pre xmlns=""><code>var treeObj = $.fn.zTree.getZTreeObj("tree");
var sNodes = treeObj.getSelectedNodes();
if (sNodes.length > 0) {
	var isOpen = sNodes[0].open;
}
</code></pre>
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