im currently trying to create a picture quiz that utlises this tutorial https://www.sitepoint.com/simple-javascript-quiz/
the issue I am having is changing this quiz from a solely text based affair into a picture quiz. for example the quiz will ask a question such as "which of these pictures is a giraffe?", the user then will have to select an answer that has a giraffe picture.
Below is the current version of the js script i have (admittedly, not much has changed, due to not being able to figure images out)
(function(){
// Functions
function buildQuiz(){
// variable to store the HTML output
const output = [];
// for each question...
myQuestions.forEach(
(currentQuestion, questionNumber) => {
// variable to store the list of possible answers
const answers = [];
// and for each available answer...
for(letter in currentQuestion.answers){
// ...add an HTML radio button
answers.push(
`<label>
<input type="radio" name="question${questionNumber}" value="${letter}">
${letter} :
${currentQuestion.answers[letter]}
</label>`
);
}
// add this question and its answers to the output
output.push(
`<div class="slide">
<div class="question"> ${currentQuestion.question} </div>
<div class="answers"> ${answers.join("")} </div>
</div>`
);
}
);
// finally combine our output list into one string of HTML and put it on the page
quizContainer.innerHTML = output.join('');
}
function showResults(){
// gather answer containers from our quiz
const answerContainers = quizContainer.querySelectorAll('.answers');
// keep track of user's answers
let numCorrect = 0;
// for each question...
myQuestions.forEach( (currentQuestion, questionNumber) => {
// find selected answer
const answerContainer = answerContainers[questionNumber];
const selector = `input[name=question${questionNumber}]:checked`;
const userAnswer = (answerContainer.querySelector(selector) || {}).value;
// if answer is correct
if(userAnswer === currentQuestion.correctAnswer){
// add to the number of correct answers
numCorrect++;
// color the answers green
answerContainers[questionNumber].style.color = 'lightgreen';
}
// if answer is wrong or blank
else{
// color the answers red
answerContainers[questionNumber].style.color = 'red';
}
});
// show number of correct answers out of total
resultsContainer.innerHTML = `${numCorrect} out of ${myQuestions.length}`;
}
function showSlide(n) {
slides[currentSlide].classList.remove('active-slide');
slides[n].classList.add('active-slide');
currentSlide = n;
if(currentSlide === 0){
previousButton.style.display = 'none';
}
else{
previousButton.style.display = 'inline-block';
}
if(currentSlide === slides.length-1){
nextButton.style.display = 'none';
submitButton.style.display = 'inline-block';
}
else{
nextButton.style.display = 'inline-block';
submitButton.style.display = 'none';
}
}
function showNextSlide() {
showSlide(currentSlide + 1);
}
function showPreviousSlide() {
showSlide(currentSlide - 1);
}
// Variables
const quizContainer = document.getElementById('quiz');
const resultsContainer = document.getElementById('results');
const submitButton = document.getElementById('submit');
const myQuestions = [
{
question: "Who invented JavaScript?",
answers: {
a: "Douglas Crockford",
b: "Sheryl Sandberg",
c: "Brendan Eich"
},
correctAnswer: "a"
},
{
question: "is my name davet?",
answers: {
a: "Douglas Crockford",
b: "Sheryl Sandberg",
c: "yes"
},
correctAnswer: "c"
},
{
question: "Which one of these is a JavaScript package manager?",
answers: {
a: "Node.js",
b: "TypeScript",
c: "npm"
},
correctAnswer: "c"
},
{
question: "Which tool can you use to ensure code quality?",
answers: {
a: "Angular",
b: "jQuery",
c: "RequireJS",
d: "ESLint"
},
correctAnswer: "d"
}
];
// Kick things off
buildQuiz();
// Pagination
const previousButton = document.getElementById("previous");
const nextButton = document.getElementById("next");
const slides = document.querySelectorAll(".slide");
let currentSlide = 0;
// Show the first slide
showSlide(currentSlide);
// Event listeners
submitButton.addEventListener('click', showResults);
previousButton.addEventListener("click", showPreviousSlide);
nextButton.addEventListener("click", showNextSlide);
})();
Below is the current HTML I have
<h1>Quiz on Important Facts</h1>
<div class="quiz-container">
<div id="quiz"></div>
<img id="myImg">
</div>
<button id="previous">Previous Question</button>
<button id="next">Next Question</button>
<button id="submit">Submit Quiz</button>
<div id="results"></div>
<link href="newcss1.css" rel="stylesheet" type="text/css"/>
<link rel="stylesheet" href="assets/vendor/bootstrap/css/bootstrap-reboot.rtl.min.css" type="text/css">
<script src="newjavascript.js" type="text/javascript"></script>
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