<!DOCTYPE html>
<html>
<head>
<meta charset=" utf-8">
<meta name="author" content="http://m.survivalescaperooms.com/" />
<title>prev()函數-武林網</title>
<style type="text/css">
.father{
height:200px;
width:200px;
border:1px solid blue;
}
</style>
<script type="text/javascript" src="mytest/jQuery/jquery-1.8.3.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$(".father p").prev().css("color","blue")
})
</script>
</head>
<body>
<div class="father">
<p>我是p元素</p>
<span>我是span元素</span>
<p>我是p元素</p>
<div>我是div元素</div>
</div>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset=" utf-8">
<meta name="author" content="http://m.survivalescaperooms.com/" />
<title>prev()函數-武林網</title>
<script type="text/javascript" src="mytest/jQuery/jquery-1.8.3.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("li").prev(".js").css("color","red");
})
</script>
</head>
<body>
<div>
<ul>
<li>HTML專區</li>
<li class="js">Javascript專區</li>
<li>Div+Css專區</li>
<li>Jquery專區</li>
</ul>
</div>
</body>
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