Angular 7 email validation using regex on reactive form

Question

On Angular, I am trying to validate email using following regex -

^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$

Like below -

createGroupForm() {
    this.childGroupForm = new FormGroup({
        'groupName': new FormControl(null, Validators.compose([
            Validators.required
        ])),
        'groupEmail': new FormControl(null, Validators.compose([
            Validators.pattern('^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$')
        ]))
    });
}

But looks like it's not working. It always display "Email is invalid.", even though it is valid.

Answer 1

I made an example here: https://stackblitz.com/edit/angular-pgc7st

So in the Validator it should be like this:

Validators.pattern(/^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/)

If you see in you code you are entering an string as reexp. so removing the string char ('') it works. Check the example.