jquery animate div one after another

jquery animate div one after another

HTML code

<!DOCTYPE html>
<html>
<head>
<script class="jsbin" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<meta charset=utf-8 />
<title>JS Bin</title>
<!--[if IE]>
  <script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<style>
  article, aside, figure, footer, header, hgroup,
  menu, nav, section { display: block; }
 
  div.test {width: 100px; height: 100px; background-color: red; display: none;}
</style>
</head>
<body>
  <div class="test"></div>
  <div class="test"></div>
  <div class="test"></div>
  <div class="test"></div>
  <div class="test"></div>
</body>
</html>


JQuery

(function($){
  $.fn.showdelay = function(){
    var delay = 0;
    return this.each(function(){
      $(this).delay(delay).fadeIn(1800);
      delay += 200;
    });
  };
})(jQuery);

$(document).ready(function(){
  $('div').showdelay();
});