form-contact.html

<div name="contactForm" novalidate ng-form="contactForm">
   
    <div class="form-group">
        <label for="name">Name</label>
        <input type="text" class="form-control" name="name" ng-model="formData.name" required watch-change ="updateLocal()">
    </div>

    <div class="form-group">
        <label for="lastname">Last Name</label>
        <input type="text" class="form-control" name="lastname" ng-model="formData.lastname" required watch-change ="updateLocal()">
    </div>

    <div class="form-group">
        <label for="email">Email</label>
        <input type="text" class="form-control" name="email" ng-model="formData.email" ng-pattern="/^[a-z]+[a-z0-9._]+@[a-z]+\.[a-z.]{2,5}$/" required watch-change="updateLocal()">
    </div>


    <div class="form-group row margin-top-30">
        <div class="col-xs-12 col-sm-6">
        </div>
        <div class="col-sm-6">
            <button ui-sref="form.car" class="btn btn-block btn-booster btn-info" ng-disabled="contactForm.$invalid">
                Next
            </button>
        </div>
    </div>
    
</div>