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---
title: openNode
name: functions-opennode
---
**function openNode(node);**
**function openNode(node, slide);**
**function openNode(node, on_finished);**
**function openNode(node, slide, on_finished);**
Open this node. The node must have child nodes.
Parameter **slide (optional)**: open the node using a slide animation (default is true).
Parameter **on_finished (optional)**: callback when the node is opened; this also works for nodes that are loaded lazily
{% highlight js %}
// create tree
var $tree = $('#tree1');
$tree.tree({
data: data
});
var node = $tree.tree('getNodeById', 123);
$tree.tree('openNode', node);
{% endhighlight %}
To open the node without the slide animation, call with **slide** parameter is false.
{% highlight js %}
$tree.tree('openNode', node, false);
{% endhighlight %}
Example with `on_finished` callback:
{% highlight js %}
function handleOpened(node) {
console.log('openende node', node.name);
}
$tree.tree('openNode', node, handleOpened);
{% endhighlight %}
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