左侧菜单
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>left_menu</title>
<style>
.menu{
height: 500px;
width: 20%;
background-color: gainsboro;
text-align: center;
float: left;
}
.content{
height: 500px;
width: 80%;
background-color: darkgray;
float: left;
}
.title{
line-height: 50px;
background-color: wheat;
color: rebeccapurple;}
.hide{
display: none;
}
</style>
</head>
<body>
<div class="outer">
<div class="menu">
<div class="item">
<div class="title">菜单一</div>
<div class="con">
<div>111</div>
<div>111</div>
<div>111</div>
</div>
</div>
<div class="item">
<div class="title">菜单二</div>
<div class="con hide">
<div>222</div>
<div>222</div>
<div>222</div>
</div>
</div>
<div class="item">
<div class="title">菜单三</div>
<div class="con hide">
<div>333</div>
<div>333</div>
<div>333</div>
</div>
</div>
</div>
<div class="content"></div>
</div>
<script src="jquery.min.js"></script>
<script>
$(".item .title").mouseover(function () {
$(this).next().removeClass("hide").parent().siblings().children(".con").addClass("hide");
// $(this).next().removeClass("hide");
// $(this).parent().siblings().children(".con").addClass("hide");
})
</script>
</body>
</html>
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