Comparing two input values in a form validation with AngularJS

You should be able to use ng-pattern/regex for comparing 2 input values

Email:<input type="email" name="email1" ng-model="emailReg">
Repeat Email:<input type="email" name="email2" ng-model="emailReg2" ng-pattern="emailReg">

and validation with:

<span ng-show="registerForm.email2.$error.pattern">Repeat Email should have the same value with email!</span>