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0403课后作业
张成钢的博客
Original
431 people have browsed it

实例

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style type="text/css">
		.red {color: red}
		.green {color: green}
	</style>
</head>
<body>
	<ul>
		<li>明星1  <a href="">进入相册</a></li>
		<li>明星2  <a href="">进入相册</a></li>
		<li>明星3  <a href="">进入相册</a></li>
		<li>明星4  <a href="">进入相册</a></li>
		<li>明星5  <a href="">进入相册</a></li>
		<li>明星6  <a href="">进入相册</a></li>
		<li>明星7  <a href="">进入相册</a></li>
		<li>明星8  <a href="">进入相册</a></li>
		<li>明星9  <a href="">进入相册</a></li>
		<li>明星10  <a href="">进入相册</a></li>
	</ul>

</body>
</html>

<!-- 1.在线引用 -->
<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
<script type="text/javascript">
	// 1. 第1个
	$('li').first().css('color','blue')
	// 2. 最后1个
	$('li').last().css('color','green')
	// 3. 第n个
	$('li').eq(4).css('color','red')

	// 4. get()方法
	$('li').get(2).style.color = 'pink'

	// 5. 查找
	$('li').find('a').css('color','blue')

	// 6. 遍历
	var m = $('li').toArray()
	for (var i = 0; i<=m.length - 1; i++) {
		m[i].style.color = 'coral'
	}

	// 7.移除li 样式
	$('li').removeAttr('style')

	// 8.jQuery遍历
	$('li').each(function(){
		$(this).css('color','yellow')})

	// 9.相邻兄弟 添加样式
	$('li').removeAttr('style')
	$('li:nth-child(7)+li').addClass('green')
	
	//后代（子孙所有）
	// $('li a').addClass('green')
	// //子
	// $('ul>*').addClass('red')
	// //第几个
	// $('li:nth-child(5)').addClass('green')
	// //相邻兄弟
	// $('li:nth-child(7)+li').addClass('green')
	// //后面全部兄弟
	// $('li:nth-child(7)~li').addClass('green')

	// $('li:first-child').css('color','green')
	// $('li:last-child').css('color','red')

	// $('li:eq(3)').css('color','green')

	// $('*').removeAttr('style')
	// $('*').removeClass()

	// $('li:gt(2)').css('color','green')

	// $('li:lt(7)').css('color','red')

	// $('*').removeAttr('style')
	// $('*').removeClass()
	// // $('li:even').addClass('red')
	// $('li:even').css('color','green')


</script>

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