jquery1023_1.html
<html>
<head>
<script type="text/javascript" src="jquery-3.1.1.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("p").click(function(){
$(this).hide();
});
});
</script>
</head>
<body>
<p>If you click on me, I will disappear.</p>
</body>
</html>
jquery1023_3_ShowMenu.html
<html>
<head>
<script type="text/javascript" src="../jquery-3.1.1.js"></script>
<script type="text/javascript">
document.write($("#slx").html(););
$(".level1 > a").click(function(){
$(this).addClass("current") //给当前元素添加“current”样式
next().show() //下一个元素显示
.parent().siblings().children("a").removeClass("current") //父元素的同辈元素的子元素<a>移除“current”样式
.next().hide(); //下一个元素隐藏
return false;
});
</script>
<style type="text/css">
div.box {color: red;}
ul.menu {color: red;}
li.level1 { font-size: 20pt;}
ul.level2 { font-size: 10pt;}
</style>
</head>
<body>
<div class="box">
<ul class="menu">
<li class="level1">
<a href="#none">衬衫</a>
<ul id="slx" class="level2">
<li><a href="#none">短袖衬衫</a></li>
<li><a href="#none">长袖衬衫</a></li>
<li><a href="#none">短袖T恤</a></li>
<li><a href="#none">长袖T恤</a></li>
</ul>
</li>
<li class="level1">
<a href="#none">卫衣</a>
<ul class="level2">
<li><a href="#none">开襟卫衣</a></li>
<li><a href="#none">套头卫衣</a></li>
<li><a href="#none">运动卫衣</a></li>
<li><a href="#none">童装卫衣</a></li>
</ul>
</li>
<li class="level1">
<a href="#none">裤子</a>
<ul class="level2">
<li><a href="#none">短裤</a></li>
<li><a href="#none">休闲裤</a></li>
<li><a href="#none">牛仔裤</a></li>
<li><a href="#none">免烫卡其裤</a></li>
</ul>
</li>
</ul>
</div>
</body>
</html>