/* Get Programming with JavaScript

 * Listing 11.12

 * Hiding the questions and answers

 */

​

var getQuiz = function () {

    var qIndex = 0;

    var questions = [

        {

            question: "What is the highest mountain in the world?",

            answer: "Everest"

        },

        {

            question: "What is the highest mountain in Scotland?",

            answer: "Ben Nevis"

        },

        {

            question: "How many munros are in Scotland?",

            answer: "284"

        }

    ];

​

    return {

        quizMe : function () {

            return questions[qIndex].question;

        },

​

        showMe : function () {

            return questions[qIndex].answer;

        },

​

        next : function () {

            qIndex = qIndex + 1;

            return "Ok";

        }

    };

};

​

var quiz = getQuiz();

​

​

​

/* Further Adventures

 *

 * Run the program. Then:

 *

 * 1) At the prompt, type 'quiz' and press enter.

 *

 * The quiz object has three methods,

 * next, quizMe and showMe.

 *

 * 2) At the prompt, type:

 *

 *    > quiz.questions

 *    > quiz.qIndex

 *

 * Those properties do not exist on the quiz object.

 *

 * 3) Add a new method to the returned object, showIndex,

 *    that returns the value of qIndex.

 *

 * 4) Test the new method.

 *

 */