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"> function breakout() { if (window.top!=window.self) { window.top.location="/example/hdom/tryjs_breakout.htm" } } </script> </head> <body> <input type="button" onclick="breakout()" value="跳出框架！"> </body> </html>