jQuery Event - 如何懸停時切換類樣式

我們想知道如何懸停時切換類樣式。

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<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'
  src='http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js'></script>
<style type='text/css'>
.post {
  color: red;
}
.postDesc {
  color: blue;
}
</style>
<script type='text/javascript'>
$(window).load(function(){
    $(function(){
        $(".post").hover(function(){
           $(this).toggleClass("postDesc"); 
        });
    });
});
</script>
</head>
<body>
  <div class="post">Hello world!</div>
</body>
</html>
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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jQuery Event - 如何懸停時切換類樣式
