Angular Login

HTML

<script src="https://code.angularjs.org/1.4.3/angular.js"></script>
<script src="https://code.angularjs.org/1.4.3/angular-cookies.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<div ng-show="error" class="alert alert-danger">{{error}}</div>
<div class="loginform-container">
<form name="form" ng-submit="login()" role="form">
    <div class="form-group">
        <label for="username">Username</label>
        <i class="fa fa-key"></i>
        <input type="text" name="username" id="username" class="form-control" ng-model="username" required />
        <span ng-show="form.username.$dirty && form.username.$error.required" class="help-block">Username is required</span>
    </div>
    <div class="form-group">
        <label for="password">Password</label>
        <i class="fa fa-lock"></i>
        <input type="password" name="password" id="password" class="form-control" ng-model="password" required />
        <span ng-show="form.password.$dirty && form.password.$error.required" class="help-block">Password is required</span>
    </div>
    <div class="form-actions">
        <button type="submit" ng-disabled="form.$invalid || dataLoading" class="btn btn-danger">Login</button>
        <img ng-if="dataLoading"...

CSS

body {
    background-color: #C9302C;
}

.loginform-container {
    background-color: #fff;
    width: 500px;
    margin: 0 auto;
    padding: 5px;
}

JavaScript

'use strict';
  
angular.module('Authentication')
  .controller('LoginController',
    ['$scope', '$rootScope', '$location'
    function ($scope, $rootScope, $location) {
        
        $scope.login = function () {
            $scope.dataLoading = true;            
            $scope.error = "Username and/or password invalid!";
            $scope.dataLoading = false;
        };
        
        $scope.users=[
        {
        username:'admin',
        password:'pass'
        }
        ]
    }]);