angularProject/app/controllers/ShoppingCartPageController.js

app.controller('ShoppingCartPageController',['$scope','$window','$timeout',function($scope,$window,$timeout){
  var firebaseShoppingCart = firebase.database().ref().child('users').child(firebase.auth().currentUser.uid).child('shoppingCart');
  $scope.shoppingCartItems = {};
  firebaseShoppingCart.on('value',function(snap){
    $scope.shoppingCartItems = snap.val();
  })

  // funcitons

  $scope.totalPrice = function(){
    $scope.total = 0;
    angular.forEach($scope.shoppingCartItems,function(item){
      $scope.total += item.overallPrice;
    })
    return $scope.total;
  }

  $scope.removeItem = function(i){
    // var shoppingCartFooter = document.querySelector('shopping-cart-page .items-footer');
    // var shoppingCartItem = document.querySelector('.shopping-cart-page .item');
    // var shoppingCartItemHeight = $window.getComputedStyle(shoppingCartItem, null).getPropertyValue('height');
    // shoppingCartFooter.style.transform = 'translateY(-'+shoppingCartItemHeight+')!important';
    // var shoppingCartFooterJQ = angular.element(document.querySelector('.shopping-cart-page .items-footer'));
    // shoppingCartFooterJQ.addClass('shopping-cart-footer-animate');
    // $timeout(function(){
    //   shoppingCartFooterJQ.removeClass('shopping-cart-footer-animate');
    // },1000)

    var keys = Object.keys($scope.shoppingCartItems);
    delete $scope.shoppingCartItems[keys[i]];
    firebaseShoppingCart.set($scope.shoppingCartItems);
  }
}])