SHA-1摘要算法源码（Java版）

<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
$("a").addClass("test");
[code]$("a").removeClass("test");

一些简单的效果

$("a").click(function(event){
event.preventDefault();
$(this).hide("slow");
});