<!DOCTYPE html> <html> <body> <form action="/Index/Demo/demo_form.html"> First name:<br> <input type="text" name="firstname" value="Mickey"> <br> Last name:<br> <input type="text" name="lastname" value="Mouse"> <br><br> <input type="submit" value="Submit"> </form> <p>请注意表单本身是不可见的。</p> <p>同时请注意文本字段的默认宽度是 20 个字符。</p> </body> </html>