w3school TIY
编辑您的代码：
<!DOCTYPE HTML> <html> <body> <form action="http://www.jb51.net/example/html5/demo_post_enctype.asp" method="post"> First name: <input type="text" name="fname" /><br /> <button type="submit" >提交</button> <button type="submit" formenctype="multipart/form-data">以 Multipart/form-data 类型提交</button> </form> </body> </html>
查看结果: