W3School TIY Editor
W3School 在线教程
改变方向
暗黑模式
运行代码
<!DOCTYPE html> <html> <body> <form action="/demo/demo_form.asp"> <input type="radio" name="sex" value="male" checked>Male <br> <input type="radio" name="sex" value="female">Female <br><br> <input type="submit"> </form> </body> </html>