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The OnClientMouseOutclient-side event occurs when the mouse moves off an item in the menu.

The event handler receives two parameters:

  1. The instance of the menu firing the event.

  2. An eventArgs parameter containing the following method:

  • get_item returns a reference to the RadMenuItem that the mouse just left.

  • get_domEvent returns a reference to the DOM event that caused the mouse movement.

You can use this event to respond when the mouse moves off an item:

<script type="text/javascript">
    function markItem(menu, args) {
        var attributes = args.get_item().get_attributes();
        attributes.setAttribute("visited", "true");

<telerik:RadMenu RenderMode="Lightweight" ID="RadMenu1" runat="server" Flow="Horizontal" OnClientMouseOut="markItem">
        <telerik:RadMenuItem runat="server" ExpandMode="ClientSide" Text="Item 1" visited="false" />
        <telerik:RadMenuItem runat="server" ExpandMode="ClientSide" Text="Item 2" visited="false" />
        <telerik:RadMenuItem runat="server" ExpandMode="ClientSide" Text="Item 3" visited="false" />

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