angular 10 email id validation
<div class="form-group">
<label for="email">Email: </label>
<input type="email" class="form-control" placeholder="Enter email" name="email" ngModel [email]="employee.emailId" pattern="[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,3}$" required #email ="ngModel"
[class.is-invalid]= "email.invalid && email.touched " >
<div *ngIf="email.errors && (email.dirty && email.touched)" class="alert-email alert-danger-email"><br>
<div [hidden]="!email.errors['pattern']">
Please input a valid email.
</div>
<div [hidden]="!email.errors['required']">
Email is required
</div>
</div>
</div>