angularProject/app/controllers/appRootController.js

app.controller('appRootController',['$scope',function($scope){
  $scope.isOpenMenu = false;
  $scope.openMenu = function(){
    if($scope.isOpenMenu){
      $scope.isOpenMenu = false;
    }else {
      $scope.isOpenMenu = true;
    }

  }
}])