-
+
diff --git a/src/index.js b/src/index.js
index 03737ba3..8060204e 100644
--- a/src/index.js
+++ b/src/index.js
@@ -10,6 +10,7 @@ document.addEventListener("DOMContentLoaded", () => {
const questionContainer = document.querySelector("#question");
const choiceContainer = document.querySelector("#choices");
const nextButton = document.querySelector("#nextButton");
+ const resetBtn = document.getElementById("restartButton")
// End view elements
const resultContainer = document.querySelector("#result");
@@ -23,20 +24,25 @@ document.addEventListener("DOMContentLoaded", () => {
/************ QUIZ DATA ************/
-
+
// Array with the quiz questions
const questions = [
new Question("What is 2 + 2?", ["3", "4", "5", "6"], "4", 1),
new Question("What is the capital of France?", ["Miami", "Paris", "Oslo", "Rome"], "Paris", 1),
new Question("Who created JavaScript?", ["Plato", "Brendan Eich", "Lea Verou", "Bill Gates"], "Brendan Eich", 2),
new Question("What is the mass–energy equivalence equation?", ["E = mc^2", "E = m*c^2", "E = m*c^3", "E = m*c"], "E = mc^2", 3),
+ new Question("What planet is known as the Red Planet?", ["Earth", "Mars", "Jupiter", "Venus"], "Mars", 2),
+ new Question("What is the chemical symbol for water?", ["O2", "H2O", "CO2", "NaCl"], "H2O", 1),
+ new Question("Who painted the Mona Lisa?", ["Vincent Van Gogh", "Pablo Picasso", "Leonardo da Vinci", "Claude Monet"], "Leonardo da Vinci", 3),
+ new Question("What is the largest ocean on Earth?", ["Atlantic", "Indian", "Southern", "Pacific"], "Pacific", 3),
+ new Question("Which composer wrote the Fifth Symphony?", ["Mozart", "Bach", "Beethoven", "Chopin"], "Beethoven", 2),
// Add more questions here
];
const quizDuration = 120; // 120 seconds (2 minutes)
/************ QUIZ INSTANCE ************/
-
+
// Create a new Quiz instance object
const quiz = new Quiz(questions, quizDuration, quizDuration);
// Shuffle the quiz questions
@@ -59,14 +65,27 @@ document.addEventListener("DOMContentLoaded", () => {
/************ TIMER ************/
- let timer;
+ function timerHandler() {
+ quiz.timeRemaining--;
+ if (quiz.timeRemaining > 0) {
+ const minutes = Math.floor(quiz.timeRemaining / 60).toString().padStart(2, "0");
+ const seconds = (quiz.timeRemaining % 60).toString().padStart(2, "0");
+ const timeRemainingContainer = document.getElementById("timeRemaining");
+ timeRemainingContainer.innerText = `${minutes}:${seconds}`;
+ } else {
+ quizView.style.display = "none";
+ endView.style.display = "block";
+ clearInterval(timer);
+ showResults();
+ }
+ }
+ let timer = setInterval(timerHandler, 1000);
/************ EVENT LISTENERS ************/
nextButton.addEventListener("click", nextButtonHandler);
-
-
+ resetBtn.addEventListener("click", resetButtonHandler);
/************ FUNCTIONS ************/
@@ -74,8 +93,6 @@ document.addEventListener("DOMContentLoaded", () => {
// nextButtonHandler() - Handles the click on the next button
// showResults() - Displays the end view and the quiz results
-
-
function showQuestion() {
// If the quiz has ended, show the results
if (quiz.hasEnded()) {
@@ -91,70 +108,81 @@ document.addEventListener("DOMContentLoaded", () => {
const question = quiz.getQuestion();
// Shuffle the choices of the current question by calling the method 'shuffleChoices()' on the question object
question.shuffleChoices();
-
-
// YOUR CODE HERE:
//
// 1. Show the question
// Update the inner text of the question container element and show the question text
+ questionContainer.innerText = question.text;
-
// 2. Update the green progress bar
// Update the green progress bar (div#progressBar) width so that it shows the percentage of questions answered
-
- progressBar.style.width = `65%`; // This value is hardcoded as a placeholder
-
+ progressBar.style.width = `${(quiz.currentQuestionIndex + 1) * 100 / quiz.questions.length}%`; // This value is hardcoded as a placeholder
// 3. Update the question count text
// Update the question count (div#questionCount) show the current question out of total questions
-
- questionCount.innerText = `Question 1 of 10`; // This value is hardcoded as a placeholder
+ questionCount.innerText = `Question ${quiz.currentQuestionIndex + 1} of ${quiz.questions.length}`; // This value is hardcoded as a placeholder
-
// 4. Create and display new radio input element with a label for each choice.
// Loop through the current question `choices`.
- // For each choice create a new radio input with a label, and append it to the choice container.
- // Each choice should be displayed as a radio input element with a label:
- /*
-
-
-
- */
- // Hint 1: You can use the `document.createElement()` method to create a new element.
- // Hint 2: You can use the `element.type`, `element.name`, and `element.value` properties to set the type, name, and value of an element.
- // Hint 3: You can use the `element.appendChild()` method to append an element to the choices container.
- // Hint 4: You can use the `element.innerText` property to set the inner text of an element.
-
+ // For each choice create a new radio input with a label, and append it to the choice container.
+ // Each choice should be displayed as a radio input element with a label:
+
+ //
+ //
+ //
+
+ question.choices.forEach((choice) => {
+ const radioInputElement = document.createElement("input")
+ radioInputElement.type = "radio";
+ radioInputElement.name = "choice";
+ radioInputElement.value = choice;
+
+ const label = document.createElement("label");
+ label.innerText = choice;
+ choiceContainer.appendChild(radioInputElement);
+ choiceContainer.appendChild(label);
+
+ const br = document.createElement("br");
+ choiceContainer.appendChild(br);
+ });
+
+ // Hint 1: You can use the `document.createElement()` method to create a new element.
+ // Hint 2: You can use the `element.type`, `element.name`, and `element.value` properties to set the type, name, and value of an element.
+ // Hint 3: You can use the `element.appendChild()` method to append an element to the choices container.
+ // Hint 4: You can use the `element.innerText` property to set the inner text of an element.
}
-
-
- function nextButtonHandler () {
+ function nextButtonHandler() {
let selectedAnswer; // A variable to store the selected answer value
-
-
-
// YOUR CODE HERE:
//
// 1. Get all the choice elements. You can use the `document.querySelectorAll()` method.
+ const allChoices = document.querySelectorAll("input");
// 2. Loop through all the choice elements and check which one is selected
- // Hint: Radio input elements have a property `.checked` (e.g., `element.checked`).
- // When a radio input gets selected the `.checked` property will be set to true.
- // You can use check which choice was selected by checking if the `.checked` property is true.
+ // Hint: Radio input elements have a property `.checked` (e.g., `element.checked`).
+ // When a radio input gets selected the `.checked` property will be set to true.
+ // You can use check which choice was selected by checking if the `.checked` property is true.
-
- // 3. If an answer is selected (`selectedAnswer`), check if it is correct and move to the next question
- // Check if selected answer is correct by calling the quiz method `checkAnswer()` with the selected answer.
- // Move to the next question by calling the quiz method `moveToNextQuestion()`.
- // Show the next question by calling the function `showQuestion()`.
- }
+ allChoices.forEach((choice) => {
+ if (choice.checked === true) {
+ selectedAnswer = choice.value;
+ }
+ });
+ // 3. If an answer is selected (`selectedAnswer`), check if it is correct and move to the next question
+ // Check if selected answer is correct by calling the quiz method `checkAnswer()` with the selected answer.
+ // Move to the next question by calling the quiz method `moveToNextQuestion()`.
+ // Show the next question by calling the function `showQuestion()`.
+ quiz.checkAnswer(selectedAnswer);
+ quiz.moveToNextQuestion();
+ showQuestion();
+ }
function showResults() {
@@ -166,9 +194,19 @@ document.addEventListener("DOMContentLoaded", () => {
// 2. Show the end view (div#endView)
endView.style.display = "flex";
-
+
// 3. Update the result container (div#result) inner text to show the number of correct answers out of total questions
- resultContainer.innerText = `You scored 1 out of 1 correct answers!`; // This value is hardcoded as a placeholder
+ resultContainer.innerText = `You scored ${quiz.correctAnswers} out of ${quiz.questions.length} correct answers!`; // This value is hardcoded as a placeholder
+ }
+
+ function resetButtonHandler() {
+ endView.style.display = "none";
+ quizView.style.display = "flex";
+ quiz.currentQuestionIndex = 0;
+ quiz.correctAnswers = 0;
+ quiz.shuffleQuestions();
+ showQuestion();
+ quiz.timeRemaining = 120;
+ timer = setInterval(timerHandler, 1000);
}
-
-});
\ No newline at end of file
+});
diff --git a/src/question.js b/src/question.js
index 68f6631a..2e3c5bbb 100644
--- a/src/question.js
+++ b/src/question.js
@@ -1,7 +1,20 @@
class Question {
- // YOUR CODE HERE:
- //
- // 1. constructor (text, choices, answer, difficulty)
+ constructor(text, choices, answer, difficulty) {
+ this.text = text;
+ this.choices = choices;
+ this.answer = answer;
+ this.difficulty = difficulty;
+ }
+ shuffleChoices() {
+ let i = this.choices.lenght;
+ let j = 0;
+ let temp = 0;
+ for (let i = this.choices.length - 1; i >= 0; i--) {
+ j = Math.floor(Math.random() * (i + 1));
+ temp = this.choices[i];
+ this.choices[i] = this.choices[j];
+ this.choices[j] = temp;
+ }
- // 2. shuffleChoices()
-}
\ No newline at end of file
+ }
+}
diff --git a/src/quiz.js b/src/quiz.js
index d94cfd14..f5c59be9 100644
--- a/src/quiz.js
+++ b/src/quiz.js
@@ -1,15 +1,57 @@
class Quiz {
- // YOUR CODE HERE:
- //
- // 1. constructor (questions, timeLimit, timeRemaining)
+ constructor(questions, timeLimit, timeRemaining) {
+ this.questions = questions;
+ this.timeLimit = timeLimit;
+ this.timeRemaining = timeRemaining;
+ this.correctAnswers = 0;
+ this.currentQuestionIndex = 0;
+ }
- // 2. getQuestion()
-
- // 3. moveToNextQuestion()
+ getQuestion() {
+ return this.questions[this.currentQuestionIndex];
+ }
- // 4. shuffleQuestions()
+ moveToNextQuestion() {
+ this.currentQuestionIndex++;
+ }
- // 5. checkAnswer(answer)
+ shuffleQuestions() {
+ let j = 0;
+ let temp = 0;
+ for (let i = this.questions.length - 1; i >= 0; i--) {
+ j = Math.floor(Math.random() * (i + 1));
+ temp = this.questions[i];
+ this.questions[i] = this.questions[j];
+ this.questions[j] = temp;
+ }
+ }
- // 6. hasEnded()
-}
\ No newline at end of file
+ checkAnswer(answer) {
+ if (this.questions[this.currentQuestionIndex].answer === answer) {
+ this.correctAnswers++;
+ }
+ }
+
+ hasEnded() {
+ if (this.currentQuestionIndex < this.questions.length) {
+ return false;
+ }
+ return true;
+ }
+
+ filterQuestionsByDifficulty(difficulty) {
+ if (difficulty >= 1 && difficulty <= 3) {
+ this.questions = this.questions.filter(function (question) {
+ return question.difficulty === difficulty;
+ })
+ }
+ }
+
+ averageDifficulty() {
+ const sum = this.questions.reduce(function (acc, question) {
+ return acc + question.difficulty
+ }, 0);
+
+ return sum / this.questions.length;
+ }
+}