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<html>
<head>
<meta charset=" utf-8">
<meta name="author" content="//www.VeVB.COm/" />
<title>武林网</title>
<script type="text/javascript" src="mytest/jQuery/jquery-1.8.3.js"></script>
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<ul>
<li class="zhuanqu">html专区</li>
<li class="zhuanqu">div+css专区</li>
<li class="zhuanqu">jQuery专区</li>
<li class="zhuanqu">Javascript专区</li>
</ul>
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<button>点击查看效果</button>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset=" utf-8">
<meta name="author" content="//www.VeVB.COm/" />
<title>武林网</title>
<script type="text/javascript" src="mytest/jQuery/jquery-1.8.3.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("button").click(function(){
$(":first").css("color","green")
})
})
</script>
</head>
<body>
<div>
<ul>
<li class="zhuanqu">html专区</li>
<li class="zhuanqu">div+css专区</li>
<li class="zhuanqu">jQuery专区</li>
<li class="zhuanqu">Javascript专区</li>
</ul>
<div>
<span>武林网</span>
<span>太阳出来了</span>
</div>
</div>
<button>点击查看效果</button>
</body>
</html>
