Regex for not allowing specific domain email id angular js

Question

I want to show error message if user enter the email from few specific doamins. I tried this but didn't work out.

Email <input type="text" name="email" ng-model="txtmail" ng-pattern="/^[a-zA-Z0-9_.+-]+@(?:(?:[a-zA-Z0-9-]+\.)?[a-zA-Z]+\.)?(?!(domain|domain1|domain3))\.com$/" required />

[email protected] or [email protected] should not be allowed.

\.com$ requires the string to end with .com, and it is certainly not omnitracs, xrscorp, nor roadnet, you misused the lookahead here. You need custom logic here, use \.([^.]+)$ and inspect the group value inside code. — Wiktor Stribiżew
– Wiktor Stribiżew, Commented Jun 20, 2018 at 8:16
xyz.domain.com or xyz.DOMAIN.com not be allowed. Is it [email protected] or [email protected] no ? — Stéphane GRILLON
– Stéphane GRILLON, Commented Jun 20, 2018 at 9:47
@WiktorStribiżew can you help me to correct that regex. I want to use it with ng-pattern — Rohit Kotak
– Rohit Kotak, Commented Jun 20, 2018 at 12:42

GalAbra · Accepted Answer · 2018-06-20 17:52:14Z

2

You can check the mail address via external JavaScript function:

let success = () => {console.log("Valid address")};
let fail    = () => {console.log("ERROR - Invalid address")};
let regex = /^[a-zA-Z0-9_.+-]+@(?:(?:[a-zA-Z0-9-]+\.)?[a-zA-Z]+\.)?(domain|domain1|domain3)\.com$/g;

function checkInput(element) {
  if(regex.test(element.value)) {
    fail();
  }
  else {
    success();
  }
}

Email <input type="text" name="email" onchange="checkInput(this)" ng-model="txtmail" required />

edited Jun 20, 2018 at 17:52

answered Jun 20, 2018 at 12:26

GalAbra

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3 Comments

Rohit Kotak Over a year ago

for every email it says invalid

Rohit Kotak Over a year ago

nope its taking [email protected] as valid which should be invalid

GalAbra Over a year ago

I've edited your regex to /^[a-zA-Z0-9_.+-]+@(?:(?:[a-zA-Z0-9-]+\.)?[a-zA-Z]+\.)?(domain|domain1|domain3)\.com$/g - now it works.

Stéphane GRILLON · Accepted Answer · 2018-06-20 12:45:29Z

1

Javascript:

const regex = /^[a-zA-Z0-9_.+-]+@((domain|domain1|domain)).com$/;
const str = `[email protected]`;
let m;

if ((m = regex.exec(str)) !== null) {
    // The result can be accessed through the `m`-variable.
    m.forEach((match, groupIndex) => {
        console.log(`Found match, group ${groupIndex}: ${match}`);
    });
}

Online sample here

edited Jun 20, 2018 at 12:45

answered Jun 20, 2018 at 9:46

Stéphane GRILLON

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3 Comments

Stéphane GRILLON Over a year ago

see new screeshot, domain.com is OK

Rohit Kotak Over a year ago

Nope still it is passing [email protected] which is wrong

Stéphane GRILLON Over a year ago

@Rahulgupta, you do not read the good link (version 2): regex101.com/r/9iLfck/2 see the scrennshot number 3 (1 match, 19 steps)

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