angular - Angular2 email validation

Question

I am new in learning Angular2, and I want to make a validation form that verifies emails after a RegEx pattern.

My code looks something like this but I don't have any idea if I am doing it right, or what I did wrong, can somebody please help me a bit?

Thank you!

I fixed it. Thank you a lot everybody.

<div class="alert-email">
    <label for="contactemail">EMAIL: </label>
    <input type="email" id="contactemail" name="contactemail"
           required ng-pattern="/^[a-zA-Z0-9.!#$%&’*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:.[a-zA-Z0-9-]+)*$/"
           [(ngModel)]="model.contactemail" #contactemail="ngModel"
           placeholder="Your email" /><br><br>
    <div *ngIf="contactemail.errors && (contactemail.dirty || contactemail.touched)" class="alert-email alert-danger-email"><br>
      <div [hidden]="!contactname.errors.required">
        Email is required
      </div>
      <div [hidden]="!contactname.errors">
        Please input a valid email.
      </div>
    </div>
  </div>

Answer 1

Angular 4 has a built-in "email" validation tag that can be added within the input. E.g.:

<input type="email" id="contactemail" email>

This will be valid for a series of numbers and letters then an @ then another series of letters. It will not account for the dot after the @ -- for that you can use the "pattern" tag within the input and your standard regex.