JavaScript: The Definitive Guide

25.180. Input.onfocus: event handler invoked when a form element gains focus

DOM Level 2 Events

25.180.1. Synopsis

Function onfocus

25.180.2. Description

The onfocus property of an Input object specifies an event-handler function that is invoked when the user transfers keyboard focus to that input element. Calling focus( ) to set focus to an element does not invoke onfocus for that object.

25.180.3. See Also

Element.addEventListener( ), Window.onfocus; Chapter 17