The proper naming convention must be followed when defining functions in AngularJS Services

I'm in the process of creating a demonstration application using AngularJS and I want to incorporate a factory into it as well.

Unfortunately, I keep encountering an error message that says: "SyntaxError: function statement requires a name".

Here is the code snippet where the issue lies:

var bookApp = angular.module('bookAppModule',[]);    

bookApp.controller('boookbAppCtrl', ['$scope','$http', 'Book',
  function($scope,$http,Book) {

    $scope.way=["Normal","$http","RestFul"];

    $scope.books = 
    [
    {"title":"abc","author":"zxc"},
    {"title":"def","author":"cvb"},
    {"title":"ghi","author":"nml"},
    {"title":"jkl","author":"kjh"},
    {"title":"mno","author":"fds"}
    ];

    var names=["Anuj","Donvir"];  

    $scope.newbooks = Book.getBooks;


  }]);                                                  


bookApp.factory('Book', 
  function(){

      getBooks : function(){
        return 
         [
            {"title":"newbook1","author":"zxc"},
            {"title":"newbook2","author":"cvb"},
            {"title":"newbook3","author":"nml"},
            {"title":"newbook4","author":"kjh"},
            {"title":"newbook5","author":"fds"}
         ];

      }

  });

Answer ā„–1

Your factory is missing the overall return function that should return all the 'methods' in the service.

 bookApp.factory('Book', 
  function(){
  return { // Ensure you have this return statement
      getBooks : function(){
        return 
         [
            {"title":"newbook1","author":"zxc"},
            {"title":"newbook2","author":"cvb"},
            {"title":"newbook3","author":"nml"},
            {"title":"newbook4","author":"kjh"},
            {"title":"newbook5","author":"fds"}
         ];

        }
     }    
  });

Addition
In addition to the issue mentioned above, I also struggled with a similar error in angular services. The error was caused by not having the overall return function on the same line as the opening curly brace {. See examples below for clarification.

// This will cause an error
 bookApp.factory('Book', 
      function(){
      return 
      { // Opening curly brace not on the same line as return
          getBooks : function(){
           // ...
          }
      }    
     });

// This will not cause an error
 bookApp.factory('Book', 
      function(){
      return { // Opening curly brace on the same line as return
          getBooks : function(){
           // ...
          } 
      }   
      });

The exact reason for this behavior is unknown, but ensuring that the return and opening curly brace are on the same line can prevent project delays and errors.

Answer ā„–2

If you want to forget about the position of the braces, you can create this angular factory using the Revealing Module Pattern in the following manner...

  bookApp.factory('Book', 
  function(){

      var factoryServices=
      {
            getBooks: getBooks
      };

      return factoryServices;

      function getBooks()
      {
        // ...
      }

  }   

});

For further information: https://github.com/johnpapa/angular-styleguide#style-y052

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