diff --git a/src/index.js b/src/index.js
index 03737ba3..8784f3b8 100644
--- a/src/index.js
+++ b/src/index.js
@@ -3,172 +3,161 @@ document.addEventListener("DOMContentLoaded", () => {
// View divs
const quizView = document.querySelector("#quizView");
const endView = document.querySelector("#endView");
-
// Quiz view elements
const progressBar = document.querySelector("#progressBar");
const questionCount = document.querySelector("#questionCount");
const questionContainer = document.querySelector("#question");
const choiceContainer = document.querySelector("#choices");
const nextButton = document.querySelector("#nextButton");
-
+ const choicesElements = document.getElementsByName("choice");
+ const timeRemainingContainer = document.getElementById("timeRemaining");
// 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 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}`;
-
// Show first question
showQuestion();
-
-
/************ TIMER ************/
-
let timer;
-
-
/************ EVENT LISTENERS ************/
-
nextButton.addEventListener("click", nextButtonHandler);
-
-
-
/************ FUNCTIONS ************/
-
- // showQuestion() - Displays the current question and its choices
+ 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()) {
showResults();
return;
}
-
// Clear the previous question text and question choices
questionContainer.innerText = "";
choiceContainer.innerHTML = "";
-
// Get the current question from the quiz by calling the Quiz class method `getQuestion()`
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
-
-
+ // Update the inner text of the question contaier element and show the question text
+ questionContainer.textContent = 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
-
-
-
- // 3. Update the question count text
+ //const progress = (quiz.currentQuestionIndex / quiz.questions.length) * 100;
+ //progressBar.style.width = `${progress}%`; // This value is hardcoded as a placeholder
+ const progressPercentage =
+ ((quiz.questionIndex + 1) / quiz.questions.length) * 100;
+ progressBar.style.width = `${progressPercentage}%`;
+ // 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
-
-
-
+ const current = quiz.currentQuestionIndex + 1;
+ const total = quiz.questions.length;
+ questionCount.innerText = `Question ${current} of ${total}`; // 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.
-
+ question.choices.forEach((choice) => {
+ const choiceInput = document.createElement("input");
+ choiceInput.type = "radio";
+ choiceInput.name = "choice";
+ choiceInput.value = choice;
+ choiceContainer.appendChild(choiceInput);
+ const choiceLabel = document.createElement("label");
+ choiceLabel.innerText = choice;
+ choiceContainer.appendChild(choiceLabel);
+ });
}
-
-
-
- function nextButtonHandler () {
- let selectedAnswer; // A variable to store the selected answer value
-
-
-
+ function nextButtonHandler() {
+ // A variable to store the selected answer value
// YOUR CODE HERE:
- //
- // 1. Get all the choice elements. You can use the `document.querySelectorAll()` method.
-
-
- // 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.
-
-
+ let selectedAnswer = "";
+ for (let i = 0; i < choicesElements.length; i++) {
+ if (choicesElements[i].checked) {
+ selectedAnswer = choicesElements[i].value;
+ }
+ }
+ if (selectedAnswer) {
+ quiz.checkAnswer(selectedAnswer);
+ }
+ quiz.currentQuestionIndex++;
+ showQuestion();
// 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()`.
- }
-
-
-
-
+ // 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()`.
+ }
function showResults() {
-
// YOUR CODE HERE:
//
// 1. Hide the quiz view (div#quizView)
quizView.style.display = "none";
-
// 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
}
-
-});
\ No newline at end of file
+ //TIMER
+ function startTimer() {
+ console.log("quiz time remaining", quiz.timeRemaining);
+ timer = setInterval(() => {
+ quiz.timeRemaining--;
+ const minutes = Math.floor(quiz.timeRemaining / 60)
+ .toString()
+ .padStart(2, "0");
+ const seconds = (quiz.timeRemaining % 60).toString().padStart(2, "0");
+ timeRemainingContainer.innerText = `${minutes}:${seconds}`;
+ if (quiz.timeRemaining <= 0) {
+ clearInterval(timer);
+ showResults();
+ }
+ }, 1000);
+ }
+ startTimer();
+});
diff --git a/src/question.js b/src/question.js
index 68f6631a..fe3913c1 100644
--- a/src/question.js
+++ b/src/question.js
@@ -1,7 +1,19 @@
class Question {
- // YOUR CODE HERE:
- //
- // 1. constructor (text, choices, answer, difficulty)
+ constructor(text, choices, answer, difficulty) {
+ this.text = text; // data type strings
+ this.choices = choices; // data type array of strings
+ this.answer = answer; // data type strings
+ this.difficulty = difficulty; // data type number
+ }
+ shuffleChoices() {
+ for (let i = 0; i < this.choices.length; i++) {
+ let randomIndex = Math.floor(Math.random() * this.choices.length);
+ let choiceToMove = this.choices[i];
+ this.choices.splice(i, 1);
+ this.choices.splice(randomIndex, 0, choiceToMove);
- // 2. shuffleChoices()
-}
\ No newline at end of file
+ //apply to the property choice using sort method and Math.random between -0 e 9.
+ //this.choices = this.choices.sort(() => Math.random() - 0.5);
+ }
+ }
+}
diff --git a/src/quiz.js b/src/quiz.js
index d94cfd14..94f26072 100644
--- a/src/quiz.js
+++ b/src/quiz.js
@@ -1,15 +1,52 @@
class Quiz {
- // YOUR CODE HERE:
- //
- // 1. constructor (questions, timeLimit, timeRemaining)
+ constructor(questions, timeLimit, timeRemaining) {
+ this.questions = questions; // 1º array of objects to store all questions
+ this.timeLimit = timeLimit; // 2º Number
+ this.timeRemaining = timeRemaining; // 3º Number
+ this.correctAnswers = 0;
+ this.currentQuestionIndex = 0;
+ }
- // 2. getQuestion()
-
- // 3. moveToNextQuestion()
+ getQuestion() {
+ return this.questions[this.currentQuestionIndex]; // Array index already initialized by 0
+ }
- // 4. shuffleQuestions()
+ moveToNextQuestion() {
+ this.currentQuestionIndex += 1;
+ }
- // 5. checkAnswer(answer)
+ shuffleQuestions() {
+ this.questions = this.questions.sort(() => Math.random() - 0.9);
+ }
- // 6. hasEnded()
-}
\ No newline at end of file
+ checkAnswer(answer) {
+ const currentQuestion = this.getQuestion(); // Store answer input into a variable
+ if (answer === currentQuestion.answer) {
+ //compare answer input with correct answer from the question
+ this.correctAnswers += 1; // increase by 1 if correct answered.
+ }
+ }
+
+ hasEnded() {
+ return this.currentQuestionIndex === this.questions.length; // It is comparisson No need to return with if/else
+ }
+
+ filterQuestionsByDifficulty(difficulty) {
+ if (difficulty !== 1 && difficulty !== 2 && difficulty !== 3) {
+ return;
+ }
+ this.questions = this.questions.filter((oneQuestion) => {
+ if (oneQuestion.difficulty === difficulty) {
+ return true;
+ }
+ });
+ }
+
+ averageDifficulty() {
+ return (
+ this.questions.reduce((acc, currentQuestion) => {
+ return acc + currentQuestion.difficulty;
+ }, 0) / this.questions.length
+ );
+ }
+}