源代码
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>编程字典</title> </head> <body> <form action="demo_form.php" method="get"> 选择你喜欢的学科： <button name="subject" type="submit" value="fav_HTML">HTML</button> <button name="subject" type="submit" value="fav_CSS">CSS</button> </form> </body> </html>
运行结果