angularProject/app/controllers/appRootController.js

app.controller('AppRootController',['$scope','$window','$timeout',function($scope,$window,$timeout){
  var window = angular.element($window);
  $scope.load = function(){
    $timeout(function(){
      var preloader = angular.element(document.querySelector('.preload-screen'));
      preloader.css('opacity','0');
    },2700)
    $timeout(function(){
      var preloader = angular.element(document.querySelector('.preload-screen'));
      preloader.css('display','none');
    },3700)
  }

  $scope.isOpenMenu = false;
  $scope.toggleMenu = function(){
    if($scope.isOpenMenu){
      $scope.isOpenMenu = false;
    }else {
      $scope.isOpenMenu = true;
    }
  }
}])