javascript-quiz-project - Raquel and Andres - WD_FT_RMT_062025

index.html

@@ -28,7 +28,7 @@ <h1>JavaScript Quiz</h1>
       </div>
 
       <!-- End Quiz View -->
-      <!-- Note: this view is initially hidden using the style attribute 'display: none' -->      
+      <!-- Note: this view is initially hidden using the style attribute 'display: none' -->
       <div id="endView" class="view" style="display: none">
         <div id="result-progress">
           <div id="resultProgressBar"></div>
@@ -39,16 +39,16 @@ <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>
 
-
     <!-- The scripts are placed at the end of the document so that all the HTML elements are loaded before we try to access them -->
     <!-- Important: Leave this as it is. Do not change the order of the scripts! -->
     <script src="src/question.js"></script>
     <script src="src/quiz.js"></script>
     <script src="src/index.js"></script>
-
   </body>
-</html>
+</html>

src/index.js

@@ -10,79 +10,139 @@ 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(
+      "Who created JavaScript?",
+      ["Plato", "Brendan Eich", "Lea Verou", "Bill Gates"],
+      "Brendan Eich",
+      2
+    ),
     // Add more questions here
+    new Question(
+      "Which of the following is a JavaScript data type?",
+      ["Boolean", "Integer", "Float", "Character"],
+      "Boolean",
+      0
+    ),
+    new Question(
+      "What keyword is used to declare a constant in JavaScript?",
+      ["var", "const", "let", "define"],
+      "const",
+      1
+    ),
+    new Question(
+      "Which method converts a JSON string into a JavaScript object?",
+      ["JSON.parse()", "JSON.stringify()", "parseJSON()", "toObject()"],
+      "JSON.parse()",
+      0
+    ),
+    new Question(
+      "Which of the following is NOT a looping structure in JavaScript?",
+      ["for", "foreach", "while", "do-while"],
+      "foreach",
+      1
+    ),
+    new Question(
+      "What is the output of typeof null in JavaScript?",
+      ["'object'", "'null'", "'undefined'", "'boolean'"],
+      "'object'",
+      0
+    ),
   ];
   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}`;
+  timeRemainingContainer.innerText = `${minutes}:${seconds}`;*/
 
-  // Show first question
-  showQuestion();
+  /************  TIMER  ************/
+  let timer;
 
+  timer = setInterval(function () {
+    quiz.timeRemaining--;
+    const minutes = Math.floor(quiz.timeRemaining / 60)
+      .toString()
+      .padStart(2, "0");
+    const seconds = (quiz.timeRemaining % 60).toString().padStart(2, "0");
 
-  /************  TIMER  ************/
+    // Display the time remaining in the time remaining container
+    const timeRemainingContainer = document.getElementById("timeRemaining");
+    timeRemainingContainer.innerText = `${minutes}:${seconds}`;
+  }, 1000);
 
-  let timer;
+  setTimeout(function () {
+    clearInterval(timer);
+    showResults();
+  }, 120000);
 
+  // Show first question
+  showQuestion();
 
   /************  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() {
+    clearInterval(timer);
     // If the quiz has ended, show the results
     if (quiz.hasEnded()) {
       showResults();
       return;
     }
 
+    timer = setInterval(function () {
+      quiz.timeRemaining--;
+      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}`;
+    }, 1000);
+
+    setTimeout(function () {
+      clearInterval(timer);
+      showResults();
+    }, 120000);
+
     // Clear the previous question text and question choices
     questionContainer.innerText = "";
     choiceContainer.innerHTML = "";
@@ -91,84 +151,124 @@ 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 = `65%`; // This value is hardcoded as a placeholder
+    progressBar.style.width = `${
+      (quiz.currentQuestionIndex / quiz.questions.length) * 100
+    }%`;
 
-
-    // 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:
+    /* 
           <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.
-
+    //console.log(question.choices);
+    question.choices.forEach((element, index) => {
+      const newRadio = document.createElement("input");
+      //const uniqueId = `choice-${index}`;
+
+      newRadio.setAttribute("type", "radio");
+      newRadio.setAttribute("name", "choice");
+      //newRadio.setAttribute("id", uniqueId);
+      newRadio.setAttribute("value", element);
+
+      const newLabel = document.createElement("label");
+      //newLabel.setAttribute("for", uniqueId);
+      newLabel.innerText = element.toString();
+
+      const newBr = document.createElement("br");
+      choiceContainer.appendChild(newRadio);
+      choiceContainer.appendChild(newLabel);
+      choiceContainer.appendChild(newBr);
+      //console.log(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.
 
-
-  function nextButtonHandler () {
-    let selectedAnswer; // A variable to store the selected answer value
-
-
+  nextButton.addEventListener("click", nextButtonHandler);
+  function nextButtonHandler() {
+    //let selectedAnswer; // A variable to store the selected answer value
+    let selectedAnswer = null;
 
     // 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.
-
-
+    // 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.
+
+    const inputs = document.querySelectorAll('input[name="choice"]');
+    //console.log(inputs);
+
+    inputs.forEach((input) => {
+      if (input.checked) {
+        selectedAnswer = input.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()`.
-  }  
-
-
-
+    // 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()`.
+    console.log("Final answer", selectedAnswer);
+    quiz.checkAnswer(selectedAnswer);
+    quiz.moveToNextQuestion();
+    showQuestion();
+  }
 
   function showResults() {
-
     // YOUR CODE HERE:
+    clearInterval(timer);
+
     //
     // 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 ${quiz.questions.length} correct answers!`; // This value is hardcoded as a placeholder
   }
-
-});
+
+  restartButton.addEventListener("click", () => {
+    endView.style.display = "none";
+    quizView.style.display = "block";
+    quiz.currentQuestionIndex = 0;
+    quiz.correctAnswers = 0;
+    quiz.timeRemaining = quizDuration;
+    const minutes = Math.floor(quiz.timeRemaining / 60)
+      .toString()
+      .padStart(2, "0");
+    const seconds = (quiz.timeRemaining % 60).toString().padStart(2, "0");
+
+    // Display the time remaining in the time remaining container
+    const timeRemainingContainer = document.getElementById("timeRemaining");
+    timeRemainingContainer.innerText = `${minutes}:${seconds}`;
+    showQuestion();
+  });
+});

src/question.js

@@ -1,7 +1,21 @@
 class Question {
+    constructor(text, choices, answer, difficulty) {
+        this.text = text;
+        this.choices = choices;
+        this.answer = answer;
+        this.difficulty = difficulty;
+    }
+    shuffleChoices() {
+        for(let i = this.choices.length - 1; i > 0; i-- ) {
+            const a = Math.floor(Math.random() * i +1);
+            [this.choices[i], this.choices[a]] = [this.choices[a], this.choices[i]];
+        }
+    }
+}
     // YOUR CODE HERE:
+
     //
     // 1. constructor (text, choices, answer, difficulty)
+
 
     // 2. shuffleChoices()
-}