Custom validation in angular js - angularjs

Question

Hi All of the angular developer, I am fetching a validation problem with angular js. I can do the validation under the Form, I can check every validate field by Form in angular js. but i want to do the same job by using Div instead of Form. many people suggested me that you can do by angular directives. but how? They did not clear to me.Here how will i check all validate directives under the Div?. I have not found any solution. Anyone have an idea or solution?. I have given my example below. now i want to validate this by using angular js directives. Thanks
<div name="userForm" novalidate>
<!-- NAME -->
<div class="form-group" ng-class="{ 'has-error' : userForm.name.$invalid && !userForm.name.$pristine }">
<label>Name*</label>
<input type="text" name="name" class="form-control" ng-model="user.name" required>
<p ng-show="userForm.name.$invalid && !userForm.name.$pristine" class="help-block">You name is required.</p>
</div>
<!-- USERNAME -->
<div class="form-group" ng-class="{ 'has-error' : userForm.username.$invalid && !userForm.username.$pristine }">
<label>Username</label>
<input type="text" name="username" class="form-control" ng-model="user.username" ng-minlength="3" ng-maxlength="8">
<p ng-show="userForm.username.$error.minlength" class="help-block">Username is too short.</p>
<p ng-show="userForm.username.$error.maxlength" class="help-block">Username is too long.</p>
</div>
<!-- EMAIL -->
<div class="form-group" ng-class="{ 'has-error' : userForm.email.$invalid && !userForm.email.$pristine }">
<label>Email</label>
<input type="email" name="email" class="form-control" ng-model="user.email">
<p ng-show="userForm.email.$invalid && !userForm.email.$pristine" class="help-block">Enter a valid email.</p>
</div>
<button type="button" ng-click="Save()" class="btn btn-primary">Submit</button>
</div>

Answer 1

Use ng-form:
<div ng-form="userForm" novalidate>
...
</div>

Answer 2

You may follow the instruction below
http://www.breezejs.com/documentation/validation
http://www.breezejs.com/breeze-labs/breezedirectivesvalidation