toggle()-----显示隐藏
toggleClass-------添加类或者删除类
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <script src="jquery-1.11.1.js"></script> <style> div { width: 100px; height: 100px; border: 1px solid #ccc; } .box1 { margin-right: 10px; } .show { background-color: red; } </style> <script src="jquery-1.11.1.js"></script> <script> $(function () { $("button").click(function () { $(".box1").toggleClass("show"); }); }); </script> </head> <body> <button>切换</button> <div class="box1"></div> </body> </html>