showQuestion() and nextButtonHandler() 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

@@ -3,7 +3,6 @@ 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");
@@ -13,6 +12,8 @@ document.addEventListener("DOMContentLoaded", () => {
 
   // End view elements
   const resultContainer = document.querySelector("#result");
+  const restartButton = document.querySelector("#restartButton");
+  restartButton.style.display = "none"; // Hide the restart button initially
 
 
   /************  SET VISIBILITY OF VIEWS  ************/
@@ -23,20 +24,41 @@ document.addEventListener("DOMContentLoaded", () => {
 
 
   /************  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),
-    // Add more questions here
+    // new Question("What is 2 + 2?", ["3", "4", "5", "6"], "4", 1), //object (instance of question) structure: question, choices (array), answer, difficulty
+    // 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("Which one is not a type of pair programming?", ["Spoon", "Hand to hand", "Eye to eye", "Being sirious & Focused"], "Being sirious & Focused = mc^2", 3),
+    new Question("Which one is not a valid way to learn programming?", ["Practice", "Read docs", "Watch tutorials", "Pray to StackOverflow"], "Pray to StackOverflow", 3),
+
+    new Question("Which keyword is used to declare variables in JavaScript?", ["let", "var", "const", "plsWork"], "plsWork", 3),
+
+    new Question("Why do programmers prefer dark mode?", ["Because light attracts bugs", "Because it looks cooler", "Because their eyes evolved", "Because it saves battery"], "Because light attracts bugs", 1),
+
+    new Question("Why did the function break up with the variable?", ["It had too many arguments", "They had no scope", "They weren’t compatible", "It was undefined"], "They had no scope", 2),
+
+    new Question("What does CSS stand for?", ["Cool Style Syntax", "Cascading Style Sheets", "Crazy Style Stuff", "Colorful Sheet Styling"], "Cascading Style Sheets", 2),
+
+    new Question("What’s the best way to comfort a JavaScript bug?", ["Console it", "Debug it", "Ignore it", "Restart the PC"], "Console it", 1),
+
+    new Question("What’s the best way to debug code?", ["console.log", "rubber duck", "cry", "sacrifice to compiler"], "sacrifice to compiler", 3),
+
+    new Question("What does HTML stand for?", ["HyperText Markup Language", "How To Meet Ladies", "Hot Mail", "High Tech Modern Language"], "How To Meet Ladies", 3),
+
+    new Question("What’s a programmer’s favorite hangout place?", ["The bar()", "The loop()", "The stack()", "The cloud()"], "The bar()", 1),
+
+    new Question("What is the main purpose of Node.js?", ["Backend development", "Cooking noodles", "Running JavaScript on server", "Handling async I/O"], "Cooking noodles", 3)
   ];
+
   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
@@ -45,23 +67,41 @@ 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}`;
 
-  // Show first question
-  showQuestion();
-
 
   /************  TIMER  ************/
 
-  let timer;
+  let timer = () => {
+    setInterval(() => {
+      if (quiz.timeRemaining === 0) {
+        showResults();
+        clearInterval(timer)
+        return;
+      }
+
+      quiz.timeRemaining--
+      // console.log(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}`;
+    }, 1000)
+  }
+
+  timer()
 
 
+  // Show first question
+  showQuestion();
+
   /************  EVENT LISTENERS  ************/
 
   nextButton.addEventListener("click", nextButtonHandler);
@@ -83,6 +123,9 @@ document.addEventListener("DOMContentLoaded", () => {
       return;
     }
 
+    // timer()
+
+
     // Clear the previous question text and question choices
     questionContainer.innerText = "";
     choiceContainer.innerHTML = "";
@@ -91,49 +134,105 @@ 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 
     // 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 = `${quiz.currentQuestionIndex + 1} of ${questions.length}`; //  This value is hardcoded as a placeholder
+
+    question.choices.forEach((choice) => {
+      // choiceContainer.innerHTML += `<li><input type="radio" name="choice" value="${choice}"/><label> ${choice} </label></li>`
+
+      //Longest way
+      const liNode = document.createElement("li")
+      const inputNode = document.createElement("input")
+      inputNode.type = "radio"
+      inputNode.name = "choice"
+      inputNode.value = `${choice}`
+      const labelNode = document.createElement("label")
+      labelNode.innerHTML = `${choice}`
+
+      liNode.appendChild(inputNode)
+      liNode.appendChild(labelNode)
+      choiceContainer.appendChild(liNode)
+    })
 
 
-
     // 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:
+    /* 
+    <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 () {
-    let selectedAnswer; // A variable to store the selected answer value
+
+  function nextButtonHandler() {
+
+    const radiosNode = document.querySelectorAll('#choices li input')
+    // console.log(radiosNode)
+    let selectedAnswer;
+
+    radiosNode.forEach(radioInput => {
+      if (radioInput.checked === true) {
+        selectedAnswer = radioInput.value
+      }
+    })
+
+    // console.log(selectedAnswer)
+
+    // console.log('just a test: ', quiz.questions)
+
+    // console.log('just a test 2: ', questions)
+
+    // console.log('just a test 3: ', quiz.currentQuestionIndex)
+
+
+    if (selectedAnswer === quiz.questions[quiz.currentQuestionIndex].answer) {
+      console.log("answer is correct!")
+      quiz.correctAnswers++
+      console.log("correct answers total: ", quiz.correctAnswers)
+      quiz.moveToNextQuestion()
+      showQuestion()
+
+    } else if (selectedAnswer === undefined) {
+      console.log("user have not choosen any answer!!!")
+      selectedAnswer = null
+      quiz.moveToNextQuestion()
+      showQuestion()
+    } else {
+      console.log("answer is wrong!!")
+      quiz.moveToNextQuestion()
+      showQuestion()
+    }
+
+    console.log('the correct answer was:" ', quiz.questions[quiz.currentQuestionIndex - 1].answer)
+
+
+
 
 
 
@@ -143,18 +242,18 @@ document.addEventListener("DOMContentLoaded", () => {
 
 
     // 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.
 
-
-    // 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()`.
-  }  
 
+    // 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()`.
+  }
 
+  nextButton.addEventListener('click', nextButtonHandler)
 
 
   function showResults() {
@@ -166,9 +265,30 @@ document.addEventListener("DOMContentLoaded", () => {
 
     // 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 ${quiz.questions.length} correct answers!`; // This value is hardcoded as a placeholder
+
+    restartButton.style.display = "flex"
   }
-
-});
+
+  restartButton.addEventListener('click', () => {
+    clearInterval(timer)
+    const minutes = Math.floor(quiz.timeRemaining / 60).toString().padStart(2, "0");
+    const seconds = (quiz.timeRemaining % 60).toString().padStart(2, "0");
+    timeRemainingContainer.innerText = `${minutes}:${seconds}`;
+    quiz.currentQuestionIndex = 0
+    endView.style.display = "none";
+    quizView.style.display = "flex";
+    quiz.correctAnswers = 0
+    // console.log("before restart: ",quiz.timeRemaining)
+    quiz.timeRemaining = quizDuration
+    // console.log("after restart: ",quiz.timeRemaining)
+    quiz.shuffleQuestions()
+    showQuestion()
+  })
+
+});
+
+
+

src/question.js

@@ -3,5 +3,26 @@ 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)); // random index 0–i
+            [this.choices[i], this.choices[j]] = [this.choices[j], this.choices[i]];   // swap elements
+        }
+
+        return this.choices
+    }
+}
+
+const questionOne = new Question('what is the color below?',['yellow','red','blue'], 'blue', 1) // example queston, probably array that we use on quiz class named 'questions; goingt to consist of these objects
+
+// console.log(questionOne.shuffleChoices())