-
+
diff --git a/src/index.js b/src/index.js
index 03737ba3..a5093d85 100644
--- a/src/index.js
+++ b/src/index.js
@@ -10,72 +10,100 @@ document.addEventListener("DOMContentLoaded", () => {
const questionContainer = document.querySelector("#question");
const choiceContainer = document.querySelector("#choices");
const nextButton = document.querySelector("#nextButton");
+ const restartButton = document.querySelector("#restartButton");
+
// End view elements
const resultContainer = document.querySelector("#result");
-
/************ SET VISIBILITY OF VIEWS ************/
// Show the quiz view (div#quizView) and hide the end view (div#endView)
quizView.style.display = "block";
endView.style.display = "none";
-
/************ 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 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
+ ),
// 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
quiz.shuffleQuestions();
-
/************ SHOW INITIAL CONTENT ************/
// Convert the time remaining in seconds to minutes and seconds, and pad the numbers with zeros if needed
- const minutes = Math.floor(quiz.timeRemaining / 60).toString().padStart(2, "0");
- const seconds = (quiz.timeRemaining % 60).toString().padStart(2, "0");
+
+ function updateTimeDisplay() {
+ const minutes = Math.floor(quiz.timeRemaining / 60)
+ .toString()
+ .padStart(2, "0");
+ const seconds = (quiz.timeRemaining % 60).toString().padStart(2, "0");
+
+ // Display the time remaining in the time remaining container
+ const timeRemainingContainer = document.getElementById("timeRemaining");
+ timeRemainingContainer.innerText = `${minutes}:${seconds}`;
+ }
+ updateTimeDisplay();
+
+ /************ TIMER ************/
- // Display the time remaining in the time remaining container
- const timeRemainingContainer = document.getElementById("timeRemaining");
- timeRemainingContainer.innerText = `${minutes}:${seconds}`;
+ let timer;
// Show first question
showQuestion();
+ startCountdown();
- /************ TIMER ************/
+function startCountdown() {
+ timer = setInterval(() => {
+ quiz.timeRemaining--;
+ updateTimeDisplay();
- let timer;
+ if(quiz.timeRemaining <= 0){
+ clearInterval(timer);
+ showResults();
+ }
+ }, 1000);
+};
/************ EVENT LISTENERS ************/
nextButton.addEventListener("click", nextButtonHandler);
-
-
/************ FUNCTIONS ************/
// showQuestion() - Displays the current question and its choices
// 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()) {
@@ -91,84 +119,121 @@ 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) / quiz.questions.length) * 100
+ }%`; // This value is hardcoded as a placeholder
-
- // 3. Update the question count text
+ // 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:
- /*
+ // 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.
-
+ // 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.
+
+ question.choices.forEach((choice) => {
+ const input = document.createElement("input");
+ input.type = "radio";
+ input.name = "choice";
+ input.value = choice;
+
+ const label = document.createElement("label");
+ label.innerText = choice;
+
+ choiceContainer.appendChild(input);
+ choiceContainer.appendChild(label);
+ choiceContainer.appendChild(document.createElement("br"));
+ });
}
-
-
- function nextButtonHandler () {
- let selectedAnswer; // A variable to store the selected answer value
-
-
+ function nextButtonHandler() {
+ let selectedAnswer = null; // 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 choices = document.querySelectorAll('input[name="choice"]');
// 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.
-
-
- // 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()`.
- }
-
+ // 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.
+ choices.forEach((choice) => {
+ if (choice.checked) {
+ 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()`.
+ if(selectedAnswer){
+ quiz.checkAnswer(selectedAnswer)
+ quiz.moveToNextQuestion();
+
+ showQuestion();
+ }
+ }
+
function showResults() {
-
// YOUR CODE HERE:
//
// 1. Hide the quiz view (div#quizView)
+ clearInterval(timer);
quizView.style.display = "none";
// 2. Show the end view (div#endView)
- endView.style.display = "flex";
-
+ endView.style.display = "block";
+
// 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
+ }!`; // This value is hardcoded as a placeholder
}
-
-});
\ No newline at end of file
+ restartButton.addEventListener("click" , restartQuiz);
+
+ function restartQuiz(){
+ endView.style.display = "none";
+ quizView.style.display = "block";
+ quiz.currentQuestionIndex = 0;
+ quiz.correctAnswers = 0;
+ quiz.shuffleQuestions();
+ quiz.timeRemaining = quizDuration;
+
+ updateTimeDisplay();
+ startCountdown();
+ showQuestion();
+ }
+});
+
+
+
+
+
diff --git a/src/question.js b/src/question.js
index 68f6631a..9d6dea78 100644
--- a/src/question.js
+++ b/src/question.js
@@ -1,7 +1,21 @@
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;
+ }
- // 2. shuffleChoices()
+ shuffleChoices() {
+ // //*************************** WORKING ALTERNATIVE WITHOUT .sort ************************
+ // for (let i = this.choices.length - 1; i > 0; i--) {
+ // const j = Math.floor(Math.random() * (i + 1));
+ // const temp = this.choices[i];
+ // this.choices[i] = this.choices[j];
+ // this.choices[j] = temp;
+ // }
+
+ this.choices.sort(() => Math.random() - 0.5);
+ return this.choices;
+ }
}
\ No newline at end of file
diff --git a/src/quiz.js b/src/quiz.js
index d94cfd14..e5f3e7a1 100644
--- a/src/quiz.js
+++ b/src/quiz.js
@@ -1,15 +1,56 @@
class Quiz {
- // YOUR CODE HERE:
- //
- // 1. constructor (questions, timeLimit, timeRemaining)
- // 2. getQuestion()
+ constructor (questions, timeLimit, timeRemaining){
+ this.questions = questions;
+ this.timeLimit = timeLimit;
+ this.timeRemaining = timeRemaining;
+ this.correctAnswers = 0;
+ this.currentQuestionIndex = 0;
+ }
+
+ getQuestion() {
+ return this.questions[this.currentQuestionIndex]
+ }
- // 3. moveToNextQuestion()
+ moveToNextQuestion() {
+ this.currentQuestionIndex++
+ }
+
+ shuffleQuestions() {
+ // for(let i=this.questions.length -1; i > 0; i--) {
+
+ // const quiz = Math.floor(Math.random()*(i+1))
+ // [this.questions[i], this.questions[quiz]] = [this.questions[quiz], this.questions[i]]
+ // }
+ this.questions.sort(() => Math.random() - 0.5);
+ return this.questions;
+ }
+
+ checkAnswer(answer) {
+ const currentQuestion = this.getQuestion();
+ if(answer === currentQuestion.answer) {
+ this.correctAnswers++
+ }
+ }
- // 4. shuffleQuestions()
+ hasEnded() {
+ return this.currentQuestionIndex >= this.questions.length
+ }
- // 5. checkAnswer(answer)
+ filterQuestionsByDifficulty(difficulty) {
+ if(typeof difficulty !== "number" || difficulty < 1 || difficulty > 3) {
+ return;
+ }
+ this.questions = this.questions.filter(question => question.difficulty === difficulty)
+ }
- // 6. hasEnded()
+ averageDifficulty() {
+ if( this.questions.length === 0) {
+ return 0
+ }
+ const total = this.questions.reduce((acc, currentNumber) => {
+ return acc + currentNumber.difficulty;
+ }, 0)
+ return total /this.questions.length
+ }
}
\ No newline at end of file