OnClientValueChanging
The OnClientValueChanging client-side event occurs before the value property changes.
The event handler receives parameters:
The slider instance that fired the event.
-
Event arguments with the following properties:
get_oldValue: returns the slider value just prior to the change.
get_newValue: returns the value that will be set after the change.
set_cancel: cancel the change of the value.
get_cancel: returns a boolean that indicates whether the change of the value is cancelled.
The example below displays the new and old values.
<script type="text/javascript">
function clientBeforeValueChange(sender, eventArgs)
{
var myDiv = document.getElementById("myDiv");
myDiv.innerHTML = "Old value is:" + eventArgs.get_oldValue() + " New value:" + eventArgs.get_newValue();
eventArgs.set_cancel(true);
}
</script>
<div id="myDiv">
</div>
<telerik:radslider id="RadSlider1" runat="server" onclientvaluechanging="clientBeforeValueChange" />