OnFocus

The OnFocus event handler is raised when a textbox extended via the RadInputManager receives focus.

The signature of the event handler is unified and is the same as in the other client side event handlers available for the control. It receives two arguments - the sender which raised the event, and another argument, which gives access to additional client side methods.

Below is a small code snippet, which demonstrates how to set a default value when the textbox receives focus:

function onFocus(sender, eventArgs)
{
    //set some initial default value 
    eventArgs.get_targetInput().set_value("457");
}