Can form submission automatically add fixed content? ? ? _html/css_WEB-ITnose

For example:

A form with an input box for entering a QQ number, but when submitting, @qq.com is automatically added after the entered QQ number to become an email address Submit in format. Is there any way? ?

Reply to discussion (solution)

Yes,

Yes,

<script> <br> function check(emel){ <br> var qq = emel.qq; //Here is located the <input name="qq" /> tag <br> qq.value = "@qq.com"; <br> alert(qq.value); //This is a test, you can delete this sentence after success <br> } <br> </script>

Please enter your QQ number:

For example:

A form with an input box for entering a QQ number. But when submitting, @qq.com is automatically added after the entered QQ number to become an email format for submission. Is there any way? ?

Isn’t this a false proposition?
How to confirm that the number entered by others must be the QQ mailbox?

If you can confirm that what others enter must be the qq email address, then whether you save the number to the database or send the email directly, can you just add @qq.com yourself? ?