jquery学习第一番

    <a href="http://jquery.com/">jQuery</a>
   <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js"></script>
   <script>
     $(document).ready(function(){
       $("a").click(function(event){
         alert("As you can see, the link no longer took you to jquery.com");
         event.preventDefault();
       });
     });
   </script>

Adding and Removing an HTML Class

  

   $("a").addClass("test");
  

  

   
$("a").removeClass("test");
 
 
一些简单的效果
 
 $("a").click(function(event){
       event.preventDefault();
       $(this).hide("slow");
});