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making all of the quiz work with new html and javascript #3

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0817db9
Adding real questions
jamesmarkham29 Jan 13, 2026
260b9bc
Fixing up the code
jamesmarkham29 Jan 15, 2026
07128f8
getting the code in index.html and quiz.js work
jamesmarkham29 Jan 15, 2026
f0d6469
compressing the code
jamesmarkham29 Jan 20, 2026
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52 changes: 24 additions & 28 deletions index.html
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Original file line number Diff line number Diff line change
@@ -1,34 +1,30 @@
<!DOCTYPE html>
<html lang="en">
<html>
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>JavaScript Quiz App</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="normalize.css">
<link rel="stylesheet" href="quiz.css">

<!-- The core Firebase JS SDK is always required and must be listed first -->
<script src="https://www.gstatic.com/firebasejs/7.19.1/firebase-app.js"></script>
<script src="https://www.gstatic.com/firebasejs/7.19.1/firebase-database.js"></script>

<title>Simple Quiz</title>
<style>
body { font-family: Arial; padding: 20px; }
.answer { display: block; margin: 8px 0; cursor: pointer; }
.selected { background: #4caf50; color: white; }
#scoreBox { display: none; }
</style>
</head>
<body>
<div class="wrapper">
<header>
<p class="title">JavaScript Quiz App</p>
</header>
<h2 id="scoreCounter">Score : <span id="showScore">0</span></h2>
<div id="app">
<hr>
<h3 id="question"></h3>
<button id="answer1"></button>
<button id="answer2"></button>
<button id="answer3"></button>
</div>
<button id="nextQuestion" onclick="nextQuestion()">Next</button>
</div>

</body>

<h1>Quiz</h1>

<h2 id="scoreBox">Score: <span id="score">0</span></h2>

<h3 id="question"></h3>

<div id="answers"></div>

<button id="back">Back</button>
<button id="next">Next</button>
<button id="submit" style="display:none;">Submit</button>
<button id="restart" style="display:none;">Restart</button>

<script src="quiz.js"></script>
</html>
</body>
</html>
137 changes: 78 additions & 59 deletions quiz.js
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Original file line number Diff line number Diff line change
@@ -1,61 +1,80 @@
// Web app's Firebase configuration
var firebaseConfig = {
apiKey: "AIzaSyAbFistmgFQcIOojLVD7cgXmTE9mLvuqVc",
authDomain: "quizapp-74d37.firebaseapp.com",
databaseURL: "https://quizapp-74d37.firebaseio.com",
projectId: "quizapp-74d37",
storageBucket: "quizapp-74d37.appspot.com",
messagingSenderId: "10113678267",
appId: "1:10113678267:web:d2aa73777b379fb241629e",
measurementId: "G-PEKPZ347TY"
};
// Initialize Firebase
firebase.initializeApp(firebaseConfig);
var database = firebase.database();



var getQuestion = document.getElementById("question");
var getAnswer1 = document.getElementById("answer1");
var getAnswer2 = document.getElementById("answer2");
var getAnswer3 = document.getElementById("answer3");
var getScore = document.getElementById("showScore");


var quizQuestions;
var questionId = 0;
var score = 1;

// getting quiz data from Firebase
database.ref('QuizData').on('value', function(questions){
quizQuestions = questions.val();
});


let getQuest = () => {
//for (question in quizQuestions) {
getQuestion.innerHTML = quizQuestions[questionId].question;
getAnswer1.innerText = quizQuestions[questionId].answer1;
getAnswer2.innerText = quizQuestions[questionId].answer2;
getAnswer3.innerText = quizQuestions[questionId].answer3;
getScore.innerText = score;
if(quizQuestions[questionId].correctAnswer)
{}
//}
const questionEl = document.getElementById("question");
const answersEl = document.getElementById("answers");
const scoreBox = document.getElementById("scoreBox");
const scoreEl = document.getElementById("score");

const nextBtn = document.getElementById("next");
const backBtn = document.getElementById("back");
const submitBtn = document.getElementById("submit");
const restartBtn = document.getElementById("restart");

const quiz = [
{ q: "Red Planet?", a: ["Venus", "Mars", "Jupiter"], c: "Mars" },
{ q: "Largest ocean?", a: ["Atlantic", "Pacific", "Indian"], c: "Pacific" },
{ q: "Plants absorb?", a: ["CO2", "Oxygen", "Nitrogen"], c: "CO2" }
];

let index = 0;
let score = 0;
let selected = null;

function load() {
let q = quiz[index];
questionEl.textContent = q.q;

answersEl.innerHTML = "";
selected = null;

q.a.forEach(ans => {
let div = document.createElement("div");
div.textContent = ans;
div.className = "answer";
div.onclick = () => {
document.querySelectorAll(".answer").forEach(a => a.classList.remove("selected"));
div.classList.add("selected");
selected = ans;
};
answersEl.appendChild(div);
});

backBtn.disabled = index === 0;
nextBtn.style.display = index === quiz.length - 1 ? "none" : "inline-block";
submitBtn.style.display = index === quiz.length - 1 ? "inline-block" : "none";
}

setInterval(getQuest, 1000);

//quizQuestions[1].correctAnswer;
questionId = questionId + 1;

// showing quiz data
let nextQuestion = () => {
questionId = questionId + 1;
getQuestion.innerHTML = quizQuestions[questionId].question;
getAnswer1.innerText = quizQuestions[questionId].answer1;
getAnswer2.innerText = quizQuestions[questionId].answer2;
getAnswer3.innerText = quizQuestions[questionId].answer3;
console.log(quizQuestions[question].correctAnswer)
questionId = questionId;
}
nextBtn.onclick = () => {
if (!selected) return alert("Pick one");
if (selected === quiz[index].c) score++;
index++;
load();
};

backBtn.onclick = () => {
if (index > 0) index--;
load();
};

submitBtn.onclick = () => {
if (!selected) return alert("Pick one");
if (selected === quiz[index].c) score++;

scoreEl.textContent = score;
scoreBox.style.display = "block";

nextBtn.style.display = "none";
backBtn.style.display = "none";
submitBtn.style.display = "none";
restartBtn.style.display = "inline-block";
};

restartBtn.onclick = () => {
index = 0;
score = 0;
scoreBox.style.display = "none";
restartBtn.style.display = "none";
nextBtn.style.display = "inline-block";
backBtn.style.display = "inline-block";
load();
};

load();