PT_RMT_012025 Gonçalo Neves & Daniel Fischer

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

@@ -10,63 +10,98 @@ document.addEventListener("DOMContentLoaded", () => {
   const questionContainer = document.querySelector("#question");
   const choiceContainer = document.querySelector("#choices");
   const nextButton = document.querySelector("#nextButton");
+  const inputs = document.querySelectorAll("input");
 
   // End view elements
   const resultContainer = document.querySelector("#result");
-
+  const restartQuizButton = document.querySelector("#restartButton");
 
   /************  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");
 
-  // 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 timerStarted = false;
 
 
-  /************  EVENT LISTENERS  ************/
+  function startTimer() {
 
-  nextButton.addEventListener("click", nextButtonHandler);
+    timerStarted = true;
 
+    timer = setInterval(() => {
 
+      quiz.timeRemaining--;
+      displayTime(quiz.timeRemaining  )
+
+
+      if (quiz.timeRemaining === 0) {
+        clearInterval(timer);
+        showResults();
+      }
+    }, 1000);
+  };
+
+  function displayTime (time) {
+    const minutes = Math.floor(time / 60)
+      .toString()
+      .padStart(2, "0");
+    const seconds = (time % 60).toString().padStart(2, "0");
+
+    // Display the time remaining in the time remaining container
+    const timeRemainingContainer = document.getElementById("timeRemaining");
+    timeRemainingContainer.innerText = `${minutes}:${seconds}`;
+  };
+
+  displayTime(quiz.timeRemaining)
+
+  /************  EVENT LISTENERS  ************/
+
+  nextButton.addEventListener("click", nextButtonHandler);
 
   /************  FUNCTIONS  ************/
 
@@ -91,84 +126,110 @@ 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 / 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 ${
+      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:
+    /* 
           <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.
-
+    // 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 createChoice = document.createElement("input");
+      const createLabel = document.createElement("label");
+
+      createLabel.innerText = choice;
+      createChoice.type = "radio";
+      createChoice.name = "choice";
+      createChoice.value = choice;
+      createChoice.addEventListener("change", () => {
+        if (!timerStarted) {
+          startTimer();
+        }
+      });
+      choiceContainer.appendChild(createChoice);
+      choiceContainer.appendChild(createLabel);
+    });
   }
 
-
-
-  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 getAllChoices = 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.
+    getAllChoices.forEach((choice) => {
+      if (choice.checked) {
+        selectedAnswer = choice.value;
+        quiz.checkAnswer(selectedAnswer);
+        quiz.moveToNextQuestion();
+      }
+    });
+
+    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
+    resultContainer.innerText = `You scored ${quiz.correctAnswers} out of ${questions.length} correct answers!`; // This value is hardcoded as a placeholder
   }
+
+  restartQuizButton.addEventListener("click", () => {
+    clearInterval(timer)
+    timerStarted = false;
+    quiz.timeRemaining =  quizDuration
+    displayTime(quiz.timeRemaining )
+    quizView.style.display = "flex";
+    endView.style.display = "none";
+    quiz.currentQuestionIndex = 0;
+    quiz.correctAnswers = 0;
+    quiz.shuffleQuestions();
+    showQuestion();
 
-});
+  });
+});

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;      
+    }
 
-    // 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]];    
+        }
+        return this.choices;
+    }
+
+}

src/quiz.js

@@ -1,15 +1,66 @@
 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()
 
-    // 4. shuffleQuestions()
+    getQuestion() {
+        return this.questions[this.currentQuestionIndex];
+    }
+
+    moveToNextQuestion() {
+        this.currentQuestionIndex += 1;
+    }
+
+    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]];    
+        }
+        return this.questions;
+    }
+
+    checkAnswer(answer) {
+        const currentQuestion = this.getQuestion();
+        if (currentQuestion.answer ===  answer) {
+            this.correctAnswers++;
+        } ;
+    }
+
+    hasEnded() {
+        if(this.currentQuestionIndex < this.questions.length) {
+            return false;
+        } else {
+            return true;
+        };
+
+    };
+
+    filterQuestionsByDifficulty(difficulty) {
+        if (difficulty < 3 || difficulty > 1) {
+            return this.questions = this.questions.filter((question) => {
+                return question.difficulty === difficulty
+            })
+        }
+    }
+
+    averageDifficulty() {
+        const total = this.questions.reduce((acc, currentQuestion) => {
+            return acc + currentQuestion.difficulty;
+        }, 0);
+
+        const average = (total / this.questions.length)
+
+        return average
+    }
+}
 
-    // 5. checkAnswer(answer)
 
-    // 6. hasEnded()
-}
+//console.log(quiz.averageDifficulty())