i have a form on whose submit button i want to show errors in alert form , here is my code.right now i am showing errors in different divs i want to show all the required errors in one alert .i am not getting any clue how to do this.
<div class="main-container version-msg-wrapp loginpage-bg">
<div class="login-inner-container">
<div class="logo-cont"></div>
<div class="inputs-container">
<form name="userLogin" ng-submit="submitForm(userLogin.$valid)" novalidate>
<div class="input-element-row">
<div class="rgt-input-box fl"><span class="center-icon action-icon"></span><input type="text" id="c_code" ng-model="Nuser.centerCode" placeholder="Center Code" name="centerCode" value="" ng-minlength=3
ng-maxlength=5 required/></div>
<div class="cb">
</div>
</div>
<div class="input-element-row">
<div class="rgt-input-box fl"><span class="user-icon action-icon"></span><input type="text" id="u_id" placeholder="User ID" ng-model="Nuser.userID" name="userID" value="" ng-maxlength="20" required/></div>
<div class="cb"></div>
</div>
<div class="input-element-row">
<div class="rgt-input-box fl"><span class="pswd-icon action-icon"></span><input type="password" id="pwd" placeholder="Password" ng-model="busyUser.password" name="password" value="" required /></div>
<div class="cb"></div>
</div>
<div class="input-element-row">
<button type="button" name="" value="" ng-click="StudentSubmit()">Login</button>
</div>
<div ng-show="submitted && userLogin.centerCode.$dirty && userLogin.$invalid" class="alert alert-danger">
<div ng-show="userLogin.centerCode.$error.required">
Center code is required.
</div>
<div ng-show="userLogin.centerCode.$error.minlength">
Enter min 3 characters
</div>
<div ng-show="userLogin.centerCode.$error.maxlength">
Enter max 5 characters
</div>
</div>
<div ng-show=" submitted && userLogin.userID.$dirty && userLogin.userID.$invalid " class="alert alert-danger">
<div ng-show="userLogin.userID.$error.required">
User Id is required.
</div>
<div ng-show="userLogin.centerCode.$error.maxlength">
Enter Max 20 characters only
</div>
</div>
<alert ng-show="submitted && userLogin.password.$dirty && userLogin.password.$invalid" class="alert alert-danger">
<alert ng-show="userLogin.password.$error.required">
enter password
</alert>
</alert>
</form>
<div class="input-element-row">
<div class="forgot-pass"><a href="#/forgotPassword">Forgot password?</a></div>
</div>
</div>
</div>
</div>