How do I require a school email address when logging in/signing up?

Question

I am very new to programming. I'd like to require a school email address to login/sign up to my site, but I have no idea how to do this. I've written logins before, and email confirmations (etc), but I don't know how to require a specific email address (e.g. john@notarealcollege.edu). How would I verify & require a specific address (e.g. ".randomcollege.edu")? preferably in JS/PHP

Hugely appreciate the help, ty

You can use regex. But unfortunately I don't know how to use them in this situation. — Ali1928, Jun 05 '16 at 15:39
I have ready made scripts just for this, but I want to see what you you looked for and tried and may have failed. — Funk Forty Niner, Jun 05 '16 at 15:40
Re: Fred -ii-'s comment: It's always useful to see what people have tried as it helps to understand the level people are working at (or failing to work at... as is usually the case whenever I try anything even vaguely advanced (so many node.js knightmares -- it's a little bit like being in da 'nam)). — Peter David Carter, Jun 05 '16 at 15:46
No need to post scripts, I want to know the process behind it more than anything. I haven't tried anything, because I don't know how to do it. Posting the question in hopes of getting some direction on where to start, ty Fred — LemonLime, Jun 05 '16 at 15:48
if you are using php you can use filter_var for email as well with some javascript code. — Abhishek Gurjar, Jun 05 '16 at 15:54

score 1 · Answer 1 · answered Jun 05 '16 at 15:48

1

Something like this should do the trick.

var text;
var email = document.getElementById("emailadress");
function validateMail(){
   if (email == "specificemail@gmail.com")
   text = Email correct.
}
  else{
  text = Email incorrect.  
}

document.getElementById("email").innerHTML = text;

answered Jun 05 '16 at 15:48

swipeales

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Using a JS only method will fail if someone disables JS. I personally always like to use both serverside and client-side, never only client-side. – Funk Forty Niner Jun 05 '16 at 15:49
thanks is this good piece of code? im learning js – swipeales Jun 05 '16 at 15:52
You're welcome. I'm sure it's good, I was just saying that using a JS only method will fail if JS is disabled. We'll let the OP see what they think ;-) After all, they did tag as javascript. – Funk Forty Niner Jun 05 '16 at 15:53
yes he should use node.js or php for server side :) – swipeales Jun 05 '16 at 15:54
So doing it in JS leaves it vulnerable to attacks? Is that also true for mobile app hybrids (the project i'm working on)? – LemonLime Jun 05 '16 at 15:56
Ty for this swipe, its super useful. I edited my question though because I think I was asking it the wrong way lol. I don't need to require any email in particular, just the school extension so non-students can't log in – LemonLime Jun 05 '16 at 15:58

guest271314 · Accepted Answer · 2016-06-05T15:41:24.310

-1

You can include <input name="email" type="email" required /> in <form> element. required attribute requires user input in that specific field.

edited Jun 05 '16 at 15:41

answered Jun 05 '16 at 15:37

guest271314

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I don't think that that is what the question is about. Btw, not my dv. – Funk Forty Niner Jun 05 '16 at 15:38
@Fred-ii- _"I don't think that that is what the question is about"_ What do you believe Question is asking? – guest271314 Jun 05 '16 at 15:39
"downvote" description? – guest271314 Jun 05 '16 at 15:40
Question is not about requiring e-mail address. It's about verify & require. He doesn't need an email address. He needs "the" email address. – Ali1928 Jun 05 '16 at 15:40
@guest271314 Read the question again and very carefully. More specifically: *"but I don't know how to require a specific email (e.g. john@notarealcollege.edu)"* – Funk Forty Niner Jun 05 '16 at 15:41
@Ali _"He doesn't need an email address. He needs "the" email address."_ An email address has to be typed by user to be able to verify – guest271314 Jun 05 '16 at 15:42
@Fred-ii- You cannot require a specific email address. You can process and validate the email address input by user – guest271314 Jun 05 '16 at 15:43
@guest271314 yes it is possible. – Funk Forty Niner Jun 05 '16 at 15:44
@Fred-ii- How would you require a specific email address without providing that same the email address to the user? What would be purpose of an email field if the email address is pre-selected? – guest271314 Jun 05 '16 at 15:44
@guest271314 one would check if it contains a specific/exact string? ;-) – Funk Forty Niner Jun 05 '16 at 15:45
@Fred-ii- _"one would check if it contains a specific/exact string?"_ Yes, that is what `html` at post does? That is, requires an email address. Though user would need to input the value first; then check if string is valid at `php` or other server-side processing – guest271314 Jun 05 '16 at 15:46
I should have clarified, my wording was probably not the best. I need to require a specific address(@blank.edu) - any email with the schools extension should be able to log in – LemonLime Jun 05 '16 at 15:50
@Zemanor Yes, `required` attribute requires input at `` within `
`. Check that the value is correct at `php` when `form` is submitted.
– guest271314 Jun 05 '16 at 15:52

How do I require a school email address when logging in/signing up?

2 Answers2