W3School TIY Editor
W3School 在线教程
改变方向
暗黑模式
运行代码
<html> <head> <script type="text/javascript" src="/jquery/jquery.js"></script> <script type="text/javascript"> $(document).ready(function(){ $("button").toggle(function(){ $("body").css("background-color","green");}, function(){ $("body").css("background-color","red");}, function(){ $("body").css("background-color","yellow");} ); }); </script> </head> <body> <button>请点击这里，来切换不同的背景颜色</button> </body> </html>