quiz project done

index.html

@@ -39,7 +39,7 @@ <h1>JavaScript Quiz</h1>
           <div id="result"></div>
         </div>
         <!-- The below 'Restart Quiz' button is commented out because it is not used initially -->
-        <!-- <button id="restartButton" class="button-secondary">Restart Quiz</button> -->
+        <button id="restartButton" class="button-secondary">Restart Quiz</button>
       </div>
     </div>
 

src/index.js

@@ -13,7 +13,7 @@ document.addEventListener("DOMContentLoaded", () => {
 
   // End view elements
   const resultContainer = document.querySelector("#result");
-
+  const resetButton = document.querySelector("#restartButton");
 
   /************  SET VISIBILITY OF VIEWS  ************/
 
@@ -23,7 +23,7 @@ document.addEventListener("DOMContentLoaded", () => {
 
 
   /************  QUIZ DATA  ************/
-  
+
   // Array with the quiz questions
   const questions = [
     new Question("What is 2 + 2?", ["3", "4", "5", "6"], "4", 1),
@@ -36,7 +36,7 @@ document.addEventListener("DOMContentLoaded", () => {
 
 
   /************  QUIZ INSTANCE  ************/
-  
+
   // Create a new Quiz instance object
   const quiz = new Quiz(questions, quizDuration, quizDuration);
   // Shuffle the quiz questions
@@ -45,27 +45,49 @@ document.addEventListener("DOMContentLoaded", () => {
 
   /************  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");
+
 
   // Display the time remaining in the time remaining container
   const timeRemainingContainer = document.getElementById("timeRemaining");
-  timeRemainingContainer.innerText = `${minutes}:${seconds}`;
+
+  quizView.style.position = "relative";
+  timeRemainingContainer.style.position = "absolute";
+  timeRemainingContainer.style.top = "30px";
+  timeRemainingContainer.style.left = "500px";
+
+  const timeRemainingData = () => {
+    // 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");
+
+    timeRemainingContainer.innerText = `${minutes}:${seconds}`;
+  };
 
   // Show first question
   showQuestion();
 
 
   /************  TIMER  ************/
+  function updateCountdown() {
+    if (quiz.timeRemaining > 0) {
+      quiz.timeRemaining--;
+
+      timeRemainingData();
 
-  let timer;
+    } else {
+      clearInterval(timer);
+
+      showResults();
+    }
+  }
 
+  // Call the function every second
+  let timer = setInterval(updateCountdown, 1000);
 
   /************  EVENT LISTENERS  ************/
 
   nextButton.addEventListener("click", nextButtonHandler);
-
+  resetButton.addEventListener("click", resetQuiz);
 
 
   /************  FUNCTIONS  ************/
@@ -91,84 +113,140 @@ 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
+    /* Si lo hiciese iterando directamente sobre el array questions, la pregunta y las respuestas no se corresponderían*/
+    /* questions.forEach(question => { */
+    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) * 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:
-      /* 
-          <input type="radio" name="choice" value="CHOICE TEXT HERE">
-          <label>CHOICE TEXT HERE</label>
-        <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.
+    // 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:
+
+    /* quiz.questions[quiz.currentQuestionIndex] Sería otra opción si no pusiera 'question', haciendo referencia a la variable que llama al método quiz.getQuestion()*/
+    question.choices.forEach(choice => {
+      const newChoice = document.createElement("input");
+      newChoice.type = "radio";
+      newChoice.name = "choice";
+      newChoice.value = choice;
+      choiceContainer.appendChild(newChoice);
+
+      const newLabel = document.createElement("label");
+      newLabel.innerText = choice;
+      choiceContainer.appendChild(newLabel);
+
+      const breakTag = document.createElement("br");
+      choiceContainer.appendChild(breakTag);
+    });
+    /* 
+        <input type="radio" name="choice" value="CHOICE TEXT HERE">
+        <label>CHOICE TEXT HERE</label>
+      <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 choices = document.querySelectorAll("#choices input");
+    /* console.log(choices); */
 
     // 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(currChoice => {
+      if (!currChoice.checked) return;
+      if (currChoice.checked) selectedAnswer = currChoice.value;
+    });
+    /* console.log(selectedAnswer); */
 
 
+    // 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() {
 
+    //clear the timer interval when the quiz ends
+    clearInterval(timer);
+
     // 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
+    resultContainer.innerText = `You scored ${quiz.correctAnswers} out of ${quiz.questions.length} correct answers!`; // This value is hardcoded as a placeholder
+  }
+
+  function resetQuiz() {
+    // 1. Hide the end view (div#endView)
+    endView.style.display = "none";
+
+    // 2. Show the quiz view (div#quizView)
+    quizView.style.display = "block";
+
+    // 3. Reset the currentQuestionIndex to 0
+    quiz.currentQuestionIndex = 0;
+
+    // 3. Reset the correctAnswers to 0
+    quiz.correctAnswers = 0;
+
+    // 3. Shuffle the questions
+    quiz.shuffleQuestions();
+
+    // 3. Show the first question
+    showQuestion();
+
+    // 4. reset the timeRemaining 
+    quiz.timeRemaining = quizDuration;
+
+    timeRemainingData();
+
+    timer = setInterval(updateCountdown, 1000);
   }
-
-});
+});
+
+
+
+

src/question.js

@@ -1,7 +1,13 @@
 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() {
+        this.choices.sort(() => Math.random() - 0.5);
+    }
 }

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() {
+        this.questions.sort(() => Math.random() - 0.5);
+    }
 
-    // 6. hasEnded()
+
+    checkAnswer(answer) {
+         /* quiz.questions[quiz.currentQuestionIndex] */
+        if (!answer || this.currentQuestionIndex >= this.questions.length) {
+            return;
+        } 
+        if (answer === this.getQuestion().answer) {
+            this.correctAnswers++;
+        }
+    }
+
+    hasEnded() {
+        if (this.currentQuestionIndex < this.questions.length) {
+            return false;
+        } else {
+            return true;
+        };
+    }
+
+    filterQuestionsByDifficulty(difficulty) {
+        if (difficulty > 0 && difficulty < 4) {
+            const filteredQuestions = this.questions.filter(question => question.difficulty === difficulty);
+            this.questions = filteredQuestions;
+        }
+    }
+
+    averageDifficulty() {
+        const sumDifficulties = this.questions.reduce(
+            (accumulator, currentValue) => accumulator + currentValue.difficulty,
+            0,
+        );
+        const avgDifficulty = sumDifficulties / this.questions.length;
+        return avgDifficulty;
+    }
 }