51help TIY
码：
<!DOCTYPE HTML> <html> <body> <form action="http://www.51help.tk/example/html5/demo_form.asp" method="get"> E-mail: <input type="email" name="userid" /><br /> <button type="submit" >提交</button><br /> <button type="submit" formnovalidate="formnovalidate">证的提交</button> </form> </body> </html>
查看结果: