In the documentation article below are listed the client-side events of the RadNavigation
RadNavigation supports a number of client-side events that let you customize its behavior:
OnClientLoad occurs after the RadNavigation has been fully initialized on the client-side.
OnClientNodeClicking occurs when the user attempts to click on a Node.
OnClientNodeClicked occurs immediately after the user clicks on a Node.
OnClientNodeCollapsing occurs when some expanded Node is about be collapsed.
OnClientNodeCollapsed occurs immediately after some expanded Node is collapsed.
OnClientNodeExpanding occurs when some Node is about be expanded.
OnClientNodeMouseEnter occurswhen the mouse enters a Node.
OnClientNodeMouseLeave occurs when the mouse leaves a Node.
OnClientTemplateDataBound after the client template is bound and the binding expression are evaluated.
OnClientNodePopulating occurs just before child nodes are loaded from a Client DataSource.
OnClientNodePopulated occurs when nodes are loaded.