<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <style> .header{ background-color: antiquewhite; } .content{ padding: 20px; } .hide{ display: none; } </style> </head> <body> <div class="item"> <div class="header">菜单1</div> <div class="content hide">内容</div> </div> <div class="item"> <div class="header">菜单2</div> <div class="content hide">内容</div> </div> <div class="item"> <div class="header">菜单3</div> <div class="content hide">内容</div> </div> </body> <script src="../jquery-2.12.4.js"></script> <script> $('.header').click(function () { $(this).next().removeClass('hide').parent().siblings().find('.content').addClass('hide'); }) </script> </html>