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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <style> .hide{ display: none; } .active{ background-color: darkgrey; } .menu{ background-color: green; height: 40px; line-height: 40px; } .menu .menu-item{ float: left; border-right: 1px solid red; padding: 0 5px; cursor: pointer; } .content{ min-height: 100px; border: 1px solid #eeeeee; } </style> </head> <body> <div style=" 500px;margin: 0 auto"> <div class="menu"> <div class="menu-item active" a="1">菜单一</div> <div class="menu-item" a="2">菜单二</div> <div class="menu-item" a="3">菜单三</div> </div> <div class="content"> <div b="1">内容一</div> <div class="hide" b="2">内容二</div> <div class="hide" b="3">内容三</div> </div> </div> <script src="jquery-3.2.1.js"></script> <script> $('.menu-item').click(function () { $(this).addClass('active').siblings().removeClass('active'); var target = $(this).attr('a'); $('.content').children("[b='"+target+"']").removeClass('hide').siblings().addClass('hide'); }) </script> </body> </html>
效果图：
内容一
内容二
内容三
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