Get Programming with JavaScript

Get Programming with JavaScript - Listing 9.07

Listing 9.07 - A quiz question constructor

var QuizQuestion = function (question, answer) {
    this.question = question;
    this.answer = answer;
    this.options = [];

    this.addOption = function (option) {
        this.options.push(option);
    };

    this.showQuestion = function () {
        console.log(this.question);
        this.options.forEach(function (option, i) {
            console.log("(" + (i + 1) + ") " + option);
        });
    };
};

var question1 = new QuizQuestion(
    "What is the capital of France?",
    "Paris"
);

question1.addOption("Bordeaux");
question1.addOption("F");
question1.addOption("Paris");
question1.addOption("Brussels");

question1.showQuestion();

Further Adventures

Listing 9.07 - A quiz question constructor - Task 1

Add a fifth option to question1.

var QuizQuestion = function (question, answer) {
    this.question = question;
    this.answer = answer;
    this.options = [];

    this.addOption = function (option) {
        this.options.push(option);
    };

    this.showQuestion = function () {
        console.log(this.question);
        this.options.forEach(function (option, i) {
            console.log("(" + (i + 1) + ") " + option);
        });
    };
};

var question1 = new QuizQuestion(
    "What is the capital of France?",
    "Paris"
);

question1.addOption("Bordeaux");
question1.addOption("F");
question1.addOption("Paris");
question1.addOption("Brussels");
question1.addOption("Lyon");

question1.showQuestion();

Listing 9.07 - A quiz question constructor - Task 2

Create two more questions.

var QuizQuestion = function (question, answer) {
    this.question = question;
    this.answer = answer;
    this.options = [];

    this.addOption = function (option) {
        this.options.push(option);
    };

    this.showQuestion = function () {
        console.log(this.question);
        this.options.forEach(function (option, i) {
            console.log("(" + (i + 1) + ") " + option);
        });
    };
};

var question1 = new QuizQuestion(
    "What is the capital of France?",
    "Paris"
);

question1.addOption("Bordeaux");
question1.addOption("F");
question1.addOption("Paris");
question1.addOption("Brussels");
question1.addOption("Lyon");

// two more questions
var question2 = new QuizQuestion(
    "What is the capital of Norway?",
    "Oslo"
);

question2.addOption("Oslo");
question2.addOption("Stockholm");
question2.addOption("Helsinki");
question2.addOption("N");
question2.addOption("Copenhagen");

var question3 = new QuizQuestion(
    "What is the capital of Peru?",
    "Lima"
);

question3.addOption("Peru City");
question3.addOption("P");
question3.addOption("Lima");

[question1, question2, question3].forEach(function (q) {
    q.showQuestion();
});