--- /dev/null
+---
+title: autoOpen
+name: options-autoopen
+---
+
+Open nodes initially.
+
+* **true**: open all nodes.
+* **false (default)**: do nothing
+* **n**: open n levels
+
+Open all nodes initially:
+
+{% highlight js %}
+$('#tree1').tree({
+ data: data,
+ autoOpen: true
+});
+{% endhighlight %}
+
+Open first level nodes:
+
+{% highlight js %}
+$('#tree1').tree({
+ data: data,
+ autoOpen: 0
+});
+{% endhighlight %}