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jquery 常用选择器
大熊的php博客
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代码


实例

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>jquery常用选择器</title>
	<style type="text/css">

	.box { width: 600px; height: 50px;  margin: 0 auto; }
 .box ul{ margin: 0; padding: 0;overflow: hidden; }

 .box ul li{ text-align: center; width: 30px; height: 30px; float: left; background-color:#FFEFD5; list-style-type: none;margin-left:20px; border-radius: 50%}

 .box  ul  li a  { display: block; width: 100% height:100%;  text-decoration: none; line-height: 30px;}



	</style>
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
</head>
<body>
	

	<div class="box">

<ul>
	<li id="firstli"><a href="">1</a></li>
	<li><a href="">2</a></li>
	<li  class="3"><a href="">3</a></li>
	<li><a href="">4</a></li>
	<li><a href="">5</a></li>
	<li><a href="">6</a></li>
	<li><a href="">7</a></li>
	<li><a href="">8</a></li>
	<li><a href="">9</a></li>
	<li><a href="">10</a></li>
</ul>

	</div>
</body>

<script type="text/javascript">

 // 代表选择父级下面的第二个子元素
$('li:nth-child(2)').css('background-color','#ff0000')

 // 利用id选择器
$('#firstli').css('background-color','#00FF00')
 // 利用类选择器
$('.3').css('background-color','#FFE4E1')
// 利用后代选择器
 $('Li a').css('color','Grey')
// 过滤器  eq是从零开始的
 $('li:eq(6)').css('background-color','skyblue')


 $('li:nth-child(8)~*').css('background-color','skyblue')

$('li:last').css('background-color','#EEE685')

// $('li:gt(5)').css('background-color','#00FA9A')









</script>
</html>

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21.jpg


Correction status：qualified

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