Angular2 email validation

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>

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