Fire focus event : focus « jQuery « JavaScript Tutorial

<html>
  <head>
    <script type="text/javascript" src="js/jquery-1.3.2.js"></script>
    <script type="text/javascript">
        $(document).ready(function(){
            $("input").focus(function () {
                 $(this).next("span").css('color','red');
            });
        });
    </script>
  </head>
  <body>
    <body>
     <p><input type="text" /> <span>focus event fire</span></p>
    </body>
</html>

30.43.focus
	30.43.1.	Set focus to text box
	30.43.2.	Fire focus event
	30.43.3.	Set focus form field
	30.43.4.	Trigger focus event
	30.43.5.	To focus on a login input box with id 'login' on page startup