<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>左侧菜单栏示例</title>
<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script>
<style>
.left {
width: 30%;
height: 100%;
border: 5px black solid;
background-color: darkgrey;
}
.right {
width: 70%;
height: 100%;
border: 5px black solid;
background-color: cadetblue;
}
.item {
font-size: 24px;
color: black;
text-align: center;
}
.title {
font-size: 18px;
}
.hide {
display: none;
}
</style>
</head>
<body>
<div class="left">
<div class="item">章节1
<p class="title hide">标题一</p>
<p class="title hide">标题二</p>
<p class="title hide">标题三</p>
</div>
<div class="item">章节2
<p class="title hide">标题一</p>
<p class="title hide">标题二</p>
<p class="title hide">标题三</p>
</div>
<div class="item">章节3
<p class="title hide">标题一</p>
<p class="title hide">标题二</p>
<p class="title hide">标题三</p>
</div>
</div>
<script>
$('.item').click(function () {
console.log($(this));
$(this).children().removeClass('hide').parent().siblings().children().addClass('hide');
})
</script>
<div class="right"></div>
</body>
</html>
来源:https://www.cnblogs.com/WM2019/p/11893920.html