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The load event occurs when the RadToggleButton client-side object is instantiated on the page.

The event handler receives two parameters:

  1. The instance of the loaded RadToggleButton control.

  2. An empty event args.

This event comes handy in scenarios when the user wants to operate with the control's client-side API and events at the earliest available stage.

Example 1: Handling RadToggleButton OnClientLoad event.

<script type="text/javascript">
    function clientLoad(sender, args) {
        alert('RadToggleButton Object Loaded');
<telerik:RadToggleButton ID="RadToggleButton1" runat="server" OnClientLoad="clientLoad">
        <telerik:ButtonToggleState Text="State 1" />
        <telerik:ButtonToggleState Text="State 2" />

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