Trigger 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(){
        
            
            $("#old").click(function(){
              $("input").trigger("focus");
            });
            $("#new").click(function(){
              $("input").triggerHandler("focus");
            });
            $("input").focus(function(){
              $("<span>Focused!</span>").appendTo("body");
            });
               


        });
    </script>

  </head>
  <body>
    <body>
          <button id="old">.trigger("focus")</button>
          <button id="new">.triggerHandler("focus")</button><br/><br/>
        
          <input type="text" value="To Be Focused"/>
                         
    </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