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script.js
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script.js
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const questions =[
{
question: "Which team won the 2022/2023 UEFA Champions League?",
answers: [
{ text: "Manchester United", correct: false},
{ text: "Manchester City", correct: true},
{ text: "Roma", correct: false},
{ text: "Napoli", correct: false},
]
},
{
question: "who is the current African footballer of the year?",
answers: [
{ text: "Mane", correct: false},
{ text: "Salah", correct: false},
{ text: "Osimhen", correct: true},
{ text: "Kudus", correct: false},
]
},
{
question: "Vitalik Buterin is the founder of which chain?",
answers: [
{ text: "Solana", correct: false},
{ text: "Atom", correct: false},
{ text: "Aptos", correct: false},
{ text: "Ethereum", correct: true },
]
},
{
question: "which of the following is not part of Cosmos SDK?",
answers: [
{ text: "Celestia", correct: false},
{ text: "Aptos", correct: true},
{ text: "Osmo", correct: false},
{ text: "Injective", correct: false},
]
},
{
question: "What is your Name?",
answers: [
{ text: "Musa", correct: false},
{ text: "Raymond", correct: true},
{ text: "Idris", correct: false},
{ text: "John", correct: false},
]
}
];
const questionElement = document.getElementById("question");
const answerButtons = document.getElementById("answer-buttons");
const nextButton = document.getElementById("next-btn");
let currentQuestionIndex = 0;
let score = 0;
function startQuiz(){
currentQuestionIndex = 0;
score = 0;
nextButton.innerHTML = "Next";
showQuestion();
}
function showQuestion(){
resetState();
let currentQuestion = questions[currentQuestionIndex];
let questionNo = currentQuestionIndex + 1;
questionElement.innerHTML = questionNo + "." + currentQuestion.question;
currentQuestion.answers.forEach(answer => {
const button = document.createElement("button");
button.innerHTML = answer.text;
button.classList.add("btn");
answerButtons.appendChild(button);
if(answer.correct){
button.dataset.correct =answer.correct;
}
button.addEventListener("click", selectAnswer)
});
}
function resetState(){
nextButton.style.display = "none";
while(answerButtons.firstChild){
answerButtons.removeChild(answerButtons.firstChild);
}
}
function selectAnswer(e){
const selectedBtn = e.target;
const isCorrect = selectedBtn.dataset.correct === "true";
if(isCorrect){
selectedBtn.classList.add("correct");
score++;
}else{
selectedBtn.classList.add("incorrect");
}
Array.from(answerButtons.children).forEach(button => {
if(button.dataset.correct === "true"){
button.classList.add("correct");
}
button.disabled = true;
});
nextButton.style.display = "block";
}
function showScore(){
resetState();
questionElement.innerHTML = `You Scored ${score} out of ${questions.length}!`;
nextButton.innerHTML = "Play again";
nextButton.style.display = "block";
}
function handleNextButton(){
currentQuestionIndex++;
if(currentQuestionIndex < questions.length){
showQuestion();
}else{
showScore();
}
}
nextButton.addEventListener("click", ()=>{
if(currentQuestionIndex < questions.length){
handleNextButton();
}else{
startQuiz();
}
});
startQuiz();