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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>本教程(w3big.com)</title> </head> <body> <form action="demo-form.php"> First name: <input type="text" name="fname"><br> <input type="hidden" name="country" value="Norway"> <input type="submit" value="提交"> </form> <p>注意隐藏字段用户是看不到的。</p> </body> </html>