WD-PT-SEPT24-ES-SairaJerjes-Lab-Quiz

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

@@ -10,6 +10,7 @@ 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");
@@ -41,30 +42,51 @@ document.addEventListener("DOMContentLoaded", () => {
   const quiz = new Quiz(questions, quizDuration, quizDuration);
   // Shuffle the quiz questions
   quiz.shuffleQuestions();
+
 
 
   /************  SHOW INITIAL CONTENT  ************/
+  function updateTimer() {
+    let minutes = Math.floor(quiz.timeRemaining / 60).toString().padStart(2, "0");
+    let 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}`;
 
-  // 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");
+ }  // Convert the time remaining in seconds to minutes and seconds, and pad the numbers with zeros if needed
 
-  // 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;
+
+  let intervalID;
+
+  function startTimer() {
+    intervalID = setInterval(() => {
+
+
+      quiz.timeRemaining--;
+    updateTimer();
+    if(quiz.timeRemaining <= 0) {
+      clearInterval(intervalID);
+      endView.style.display = 'flex';
+      showResults();
+    }
+    }, 1000);
+  }
 
 
   /************  EVENT LISTENERS  ************/
 
   nextButton.addEventListener("click", nextButtonHandler);
+  restartButton.addEventListener("click", restartButtonHandler);
+  startTimer();
 
 
 
@@ -98,19 +120,22 @@ document.addEventListener("DOMContentLoaded", () => {
     //
     // 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
+
+    const currentQuestionIndex = quiz.currentQuestionIndex; // Índice de la pregunta actual
+    const totalQuestions = quiz.questions.length; // Total de preguntas
+    const progress = (currentQuestionIndex / totalQuestions) * 100; // Calcula el porcentaje de progreso
+    progressBar.style.width = progress + "%";
 
 
 
     // 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 ${currentQuestionIndex + 1} of  ${totalQuestions}`; //  This value is hardcoded as a placeholder
 
 
 
@@ -128,30 +153,61 @@ document.addEventListener("DOMContentLoaded", () => {
       // 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((choiceText) => {
+
+        const radioInput = document.createElement("input");
+        radioInput.type = "radio";
+        radioInput.name = "choice";
+        radioInput.value = choiceText;
+
+        const choiceLabel = document.createElement("label");
+        choiceLabel.innerText = choiceText;
+
+        const br = document.createElement("br");
+
+        choiceContainer.appendChild(radioInput);
+        choiceContainer.appendChild(choiceLabel);
+        choiceContainer.appendChild(br);
+      });
+
   }
 
 
 
   function nextButtonHandler () {
-    let selectedAnswer; // A variable to store the selected answer value
-
-
+    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('#choices input[type="radio"]');
 
     // 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.
-
+    choices.forEach((choice) => {
+      if (choice.checked) {
+        selectedAnswer = choice.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()`.
+    if (quiz.checkAnswer(selectedAnswer)) { 
+          quiz.moveToNextQuestion(); 
+          showQuestion(); 
+    } else if(selectedAnswer === null) {
+             alert("select Answer, Please");
+    }else {
+            quiz.moveToNextQuestion(); 
+            showQuestion(); 
+
+        }
   }  
 
 
@@ -166,9 +222,25 @@ document.addEventListener("DOMContentLoaded", () => {
 
     // 2. Show the end view (div#endView)
     endView.style.display = "flex";
+    clearInterval(intervalID);
 
     // 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 restartButtonHandler() {
+    quiz.timeRemaining = quizDuration;
+    endView.style.display = 'none';
+
+    quizView.style.display = 'block';
+
+    quiz.currentQuestionIndex = 0;
+    quiz.correctAnswers = 0;
+
+    quiz.shuffleQuestions();
+    showQuestion();
+    updateTimer();
+    startTimer();
   }
 
 });

src/question.js

@@ -3,5 +3,18 @@ class Question {
     //
     // 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() {
+        for (let i = this.choices.length - 1; i > 0; i--) {
+            const j = Math.floor(Math.random() * (i + 1));
+            [this.choices[i], this.choices[j]] = [this.choices[j], this.choices[i]];
+        }
+    }
 }

src/quiz.js

@@ -2,14 +2,67 @@ 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()
+
+    getQuestion() {
+        return this.questions[this.currentQuestionIndex];
+    }
 
     // 3. moveToNextQuestion()
 
+    moveToNextQuestion() {
+        this.currentQuestionIndex += 1;
+    }
+
     // 4. shuffleQuestions()
 
+    shuffleQuestions() {
+        for (let i = this.questions.length - 1; i > 0; i--) {
+            const j = Math.floor(Math.random() * (i + 1));
+            [this.questions[i], this.questions[j]] = [this.questions[j], this.questions[i]];
+        }
+    }
+
     // 5. checkAnswer(answer)
 
+    checkAnswer(answer) {
+        if (answer === this.questions[this.currentQuestionIndex].answer) {
+            this.correctAnswers += 1;
+            return true;
+        } 
+
+    }
+
     // 6. hasEnded()
+
+    hasEnded() {
+        if (this.currentQuestionIndex < this.questions.length) {
+            return false;
+        }
+        return true;
+    }
+
+
+    filterQuestionsByDifficulty(difficulty) {
+        if (typeof difficulty === 'number' && difficulty >= 1 && difficulty <= 3) {
+            this.questions = this.questions.filter(q => q.difficulty === difficulty);
+        }    
+    }
+
+    averageDifficulty() {
+        const totalDifficulty = this.questions.reduce((acc, question) => {
+            return acc + question.difficulty;
+        }, 0);
+        return totalDifficulty / this.questions.length;
+    }
+
 }