<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
.header{
font-size: 30px;background-color:#2459a2;width: 90px;line-height: 48px;color: white;
}
.hide{
display: none
}
</style>
</head>
<body>
<div style="height: 48px"></div>
<div style="width: 300px">
<div class="item">
<div class="header" id="i1" onclick="ChangeMenu('i1')" >菜单一</div>
<div class="content" >
<div>内容1</div>
<div>内容2</div>
<div>内容3</div>
</div>
</div>
<div class="item">
<div class="header" id="i2" onclick="ChangeMenu('i2')">菜单二</div>
<div class="content hide">
<div>内容1</div>
<div>内容2</div>
<div>内容3</div>
</div>
</div>
<div class="item">
<div class="header" id="i3" onclick="ChangeMenu('i3')">菜单三</div>
<div class="content hide">
<div>内容1</div>
<div>内容2</div>
<div>内容3</div>
</div>
</div>
<div class="item">
<div class="header" id="i4" onclick="ChangeMenu('i4')">菜单四</div>
<div class="content hide">
<div>内容1</div>
<div>内容2</div>
<div>内容3</div>
</div>
</div>
</div>
<script>
function ChangeMenu(nid) {
var current_header=document.getElementById(nid);
//找到所有的item标签
var item_list = current_header.parentElement.parentElement.children;
for(var i=0;i<item_list.length;i++){
var current_item = item_list[i];
console.log(current_item);
current_item.children[1].classList.add('hide');
}
current_header.nextElementSibling.classList.remove('hide');
}
</script>
</body>
</html>
