发布于 2016-10-31 05:15:32 | 137 次阅读 | 评论: 0 | 来源: 网友投递
这篇文章主要介绍了jQuery中prevUntil()方法用法,实例分析了按条件查找匹配元素之前所有的同辈元素的使用技巧,需要的朋友可以参考下本文实例讲述了jQuery中prevUntil()方法用法。分享给大家供大家参考。具体分析如下：
此函数查找匹配元素之前所有的同辈元素，直到遇到expr表达式、DOM元素或者jQuery元素匹配的那个元素为止。
可以使用可选的表达式对同辈元素集合进行筛选。
注意:祖先元素中并不包含expr表达式、DOM元素或者jQuery元素匹配的元素。
语法:
语法 一:
$(selector).prevUntil(expr,filter)实例:
实例一:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="author" content="http://www.phperz.com/" />
<title>phperz</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 div").prevUntil(".firstp").css("color","blue")
})
</script>
</head>
<body>
<div class="father">
<p class="firstp">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>
实例二:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="author" content="http://www.phperz.com/" />
<title>phperz</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 div").prevUntil(".firstp","span").css("color","blue")
})
</script>
</head>
<body>
<div class="father">
<p class="firstp">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>
语法二:
$(selector).prevUntil(element,filter)实例:
实例一:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="author" content="http://www.phperz.com/" />
<title>phperz</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 div").prevUntil(document.getElementById("firstp")).css("color","blue")
})
</script>
</head>
<body>
<div class="father">
<p id="firstp">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>
实例二:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="author" content="http://www.phperz.com/" />
<title>phperz</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 div").prevUntil(document.getElementById("firstp"),"span").css("color","blue")
})
</script>
</head>
<body>
<div class="father">
<p id="firstp">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>
希望本文所述对大家的jQuery程序设计有所帮助。