# OnClientNodeCollapsed

The **OnClientNodeCollapsed** client-side event occurs after the user clicks the collapse (minus) button.

The event handler receives parameters:

1. The **TreeView** instance that fired the event.

2. Event arguments with functions:

* **get_node()** retrieves a reference to the clicked on node.

* **get_domEvent()** retrieves a DOM event object of the node collapsing.

The example below demonstrates retrieving a reference to the collapsed parent node.

```ASPNET
<telerik:RadTreeView RenderMode="Lightweight" ID="RadTreeView1" 
     runat="server"  
     OnClientNodeCollapsed="ClientNodeCollapsed">
</telerik:RadTreeView>			
```

```JavaScript
function ClientNodeCollapsed(sender, eventArgs) {
	var node = eventArgs.get_node();
	alert(node.get_text() + " has collapsed");
}
```

## See Also

* [OnClientNodeCollapsing](https://www.telerik.com/products/aspnet-ajax/documentation/controls/treeview/client-side-programming/events/onclientnodecollapsing)

* [RadTreeNode](https://www.telerik.com/products/aspnet-ajax/documentation/controls/treeview/client-side-programming/objects/radtreenode)