<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
.hide{
display:none;
}
.item .header{
height:35px;
background-color: orange;
color:white;
line-height: 35px;
}
</style>
</head>
<body>
<div style="height: 48px"></div>
<div style="300px">
<div class="item">
<div id='i1' class="header"onclick="ChangeMenu('i1')">菜单1</div>
<div class="content ">
<div>内容1</div>
<div>内容1</div>
<div>内容1</div>
</div>
</div>
<div class="item">
<div id='i2' class="header" onclick="ChangeMenu('i2')">菜单2</div>
<div class="content hide">
<div>内容2</div>
<div>内容2</div>
<div>内容2</div>
</div>
</div>
<div class="item">
<div id='i3' class="header" onclick="ChangeMenu('i3')">菜单3</div>
<div class="content hide">
<div>内容3</div>
<div>内容3</div>
<div>内容3</div>
</div>
</div>
<div class="item">
<div id='i4' class="header" onclick="ChangeMenu('i4')">菜单4</div>
<div class="content hide">
<div>内容4</div>
<div>内容4</div>
<div>内容4</div>
</div>
</div></div>
<script>
function ChangeMenu(nid) {
var current_header=document.getElementById(nid);
var item_list=current_header.parentElement.parentElement.children;
for (var i=0;i<item_list.length;i++){
var current_item=item_list[i];
current_item.children[1].classList.add('hide')
}
current_header.nextElementSibling.classList.remove('hide')
}
</script>
</body>
</html>
