This JavaScript Multiple Choice Quiz Code with Timer allows users to take a quiz with time constraints. Upon clicking the “Start Quiz” button, users are presented with rules and can begin. Each question has a 15-second timer, encouraging quick responses. Users cannot undo their choices or exit mid-quiz. After completion, users receive a score based on correct answers. This code enhances user engagement and learning.
You can use this code on educational websites or platforms to engage users with interactive quizzes. It’s beneficial for testing knowledge retention in a fun and engaging way. Additionally, it can be integrated into learning management systems to track and assess student progress.
How to Create JavaScript Multiple Choice Quiz Code With Timer
1. Start by creating the HTML structure for your quiz. Include sections for the start button, information box, quiz box, and result box. Each section will be essential for different stages of the quiz.
<!-- start Quiz button -->
<div class="start_btn"><button>Start Quiz</button></div>
<!-- Info Box -->
<div class="info_box">
<div class="info-title"><span>Some Rules of this Quiz</span></div>
<div class="info-list">
<div class="info">1. You will have only <span>15 seconds</span> per each question.</div>
<div class="info">2. Once you select your answer, it can't be undone.</div>
<div class="info">3. You can't select any option once time goes off.</div>
<div class="info">4. You can't exit from the Quiz while you're playing.</div>
<div class="info">5. You'll get points on the basis of your correct answers.</div>
</div>
<div class="buttons">
<button class="quit">Exit Quiz</button>
<button class="restart">Continue</button>
</div>
</div>
<!-- Quiz Box -->
<div class="quiz_box">
<header>
<div class="title">Awesome Quiz Application</div>
<div class="timer">
<div class="time_left_txt">Time Left</div>
<div class="timer_sec">15</div>
</div>
<div class="time_line"></div>
</header>
<section>
<div class="que_text">
</div>
<div class="option_list">
</div>
</section>
<footer>
<div class="total_que">
</div>
<button class="next_btn">Next Que</button>
</footer>
</div>
<!-- Result Box -->
<div class="result_box">
<div class="icon">
<i class="fas fa-crown"></i>
</div>
<div class="complete_text">You've completed the Quiz!</div>
<div class="score_text">
</div>
<div class="buttons">
<button class="restart">Replay Quiz</button>
<button class="quit">Quit Quiz</button>
</div>
</div>
2. Add CSS styles to make your quiz visually appealing. Customize the look and feel of buttons, text, and containers to match your website’s design.
/* importing google fonts */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@200;300;400;500;600;700&display=swap');
*{
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: 'Poppins', sans-serif;
}
body{
background: #007bff;
}
::selection{
color: #fff;
background: #007bff;
}
.start_btn,
.info_box,
.quiz_box,
.result_box{
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2),
0 6px 20px 0 rgba(0, 0, 0, 0.19);
}
.info_box.activeInfo,
.quiz_box.activeQuiz,
.result_box.activeResult{
opacity: 1;
z-index: 5;
pointer-events: auto;
transform: translate(-50%, -50%) scale(1);
}
.start_btn button{
font-size: 25px;
font-weight: 500;
color: #007bff;
padding: 15px 30px;
outline: none;
border: none;
border-radius: 5px;
background: #fff;
cursor: pointer;
}
.info_box{
width: 540px;
background: #fff;
border-radius: 5px;
transform: translate(-50%, -50%) scale(0.9);
opacity: 0;
pointer-events: none;
transition: all 0.3s ease;
}
.info_box .info-title{
height: 60px;
width: 100%;
border-bottom: 1px solid lightgrey;
display: flex;
align-items: center;
padding: 0 30px;
border-radius: 5px 5px 0 0;
font-size: 20px;
font-weight: 600;
}
.info_box .info-list{
padding: 15px 30px;
}
.info_box .info-list .info{
margin: 5px 0;
font-size: 17px;
}
.info_box .info-list .info span{
font-weight: 600;
color: #007bff;
}
.info_box .buttons{
height: 60px;
display: flex;
align-items: center;
justify-content: flex-end;
padding: 0 30px;
border-top: 1px solid lightgrey;
}
.info_box .buttons button{
margin: 0 5px;
height: 40px;
width: 100px;
font-size: 16px;
font-weight: 500;
cursor: pointer;
border: none;
outline: none;
border-radius: 5px;
border: 1px solid #007bff;
transition: all 0.3s ease;
}
.quiz_box{
width: 550px;
background: #fff;
border-radius: 5px;
transform: translate(-50%, -50%) scale(0.9);
opacity: 0;
pointer-events: none;
transition: all 0.3s ease;
}
.quiz_box header{
position: relative;
z-index: 2;
height: 70px;
padding: 0 30px;
background: #fff;
border-radius: 5px 5px 0 0;
display: flex;
align-items: center;
justify-content: space-between;
box-shadow: 0px 3px 5px 1px rgba(0,0,0,0.1);
}
.quiz_box header .title{
font-size: 20px;
font-weight: 600;
}
.quiz_box header .timer{
color: #004085;
background: #cce5ff;
border: 1px solid #b8daff;
height: 45px;
padding: 0 8px;
border-radius: 5px;
display: flex;
align-items: center;
justify-content: space-between;
width: 145px;
}
.quiz_box header .timer .time_left_txt{
font-weight: 400;
font-size: 17px;
user-select: none;
}
.quiz_box header .timer .timer_sec{
font-size: 18px;
font-weight: 500;
height: 30px;
width: 45px;
color: #fff;
border-radius: 5px;
line-height: 30px;
text-align: center;
background: #343a40;
border: 1px solid #343a40;
user-select: none;
}
.quiz_box header .time_line{
position: absolute;
bottom: 0px;
left: 0px;
height: 3px;
background: #007bff;
}
section{
padding: 25px 30px 20px 30px;
background: #fff;
}
section .que_text{
font-size: 25px;
font-weight: 600;
}
section .option_list{
padding: 20px 0px;
display: block;
}
section .option_list .option{
background: aliceblue;
border: 1px solid #84c5fe;
border-radius: 5px;
padding: 8px 15px;
font-size: 17px;
margin-bottom: 15px;
cursor: pointer;
transition: all 0.3s ease;
display: flex;
align-items: center;
justify-content: space-between;
}
section .option_list .option:last-child{
margin-bottom: 0px;
}
section .option_list .option:hover{
color: #004085;
background: #cce5ff;
border: 1px solid #b8daff;
}
section .option_list .option.correct{
color: #155724;
background: #d4edda;
border: 1px solid #c3e6cb;
}
section .option_list .option.incorrect{
color: #721c24;
background: #f8d7da;
border: 1px solid #f5c6cb;
}
section .option_list .option.disabled{
pointer-events: none;
}
section .option_list .option .icon{
height: 26px;
width: 26px;
border: 2px solid transparent;
border-radius: 50%;
text-align: center;
font-size: 13px;
pointer-events: none;
transition: all 0.3s ease;
line-height: 24px;
}
.option_list .option .icon.tick{
color: #23903c;
border-color: #23903c;
background: #d4edda;
}
.option_list .option .icon.cross{
color: #a42834;
background: #f8d7da;
border-color: #a42834;
}
footer{
height: 60px;
padding: 0 30px;
display: flex;
align-items: center;
justify-content: space-between;
border-top: 1px solid lightgrey;
}
footer .total_que span{
display: flex;
user-select: none;
}
footer .total_que span p{
font-weight: 500;
padding: 0 5px;
}
footer .total_que span p:first-child{
padding-left: 0px;
}
footer button{
height: 40px;
padding: 0 13px;
font-size: 18px;
font-weight: 400;
cursor: pointer;
border: none;
outline: none;
color: #fff;
border-radius: 5px;
background: #007bff;
border: 1px solid #007bff;
line-height: 10px;
opacity: 0;
pointer-events: none;
transform: scale(0.95);
transition: all 0.3s ease;
}
footer button:hover{
background: #0263ca;
}
footer button.show{
opacity: 1;
pointer-events: auto;
transform: scale(1);
}
.result_box{
background: #fff;
border-radius: 5px;
display: flex;
padding: 25px 30px;
width: 450px;
align-items: center;
flex-direction: column;
justify-content: center;
transform: translate(-50%, -50%) scale(0.9);
opacity: 0;
pointer-events: none;
transition: all 0.3s ease;
}
.result_box .icon{
font-size: 100px;
color: #007bff;
margin-bottom: 10px;
}
.result_box .complete_text{
font-size: 20px;
font-weight: 500;
}
.result_box .score_text span{
display: flex;
margin: 10px 0;
font-size: 18px;
font-weight: 500;
}
.result_box .score_text span p{
padding: 0 4px;
font-weight: 600;
}
.result_box .buttons{
display: flex;
margin: 20px 0;
}
.result_box .buttons button{
margin: 0 10px;
height: 45px;
padding: 0 20px;
font-size: 18px;
font-weight: 500;
cursor: pointer;
border: none;
outline: none;
border-radius: 5px;
border: 1px solid #007bff;
transition: all 0.3s ease;
}
.buttons button.restart{
color: #fff;
background: #007bff;
}
.buttons button.restart:hover{
background: #0263ca;
}
.buttons button.quit{
color: #007bff;
background: #fff;
}
.buttons button.quit:hover{
color: #fff;
background: #007bff;
}
3. Write JavaScript functions to handle quiz logic. This includes showing questions, handling user selections, calculating scores, and managing the timer.
let questions = [
{
numb: 1,
question: "What does HTML stand for?",
answer: "Hyper Text Markup Language",
options: [
"Hyper Text Preprocessor",
"Hyper Text Markup Language",
"Hyper Text Multiple Language",
"Hyper Tool Multi Language"
]
},
{
numb: 2,
question: "What does CSS stand for?",
answer: "Cascading Style Sheet",
options: [
"Common Style Sheet",
"Colorful Style Sheet",
"Computer Style Sheet",
"Cascading Style Sheet"
]
},
{
numb: 3,
question: "What does PHP stand for?",
answer: "Hypertext Preprocessor",
options: [
"Hypertext Preprocessor",
"Hypertext Programming",
"Hypertext Preprogramming",
"Hometext Preprocessor"
]
},
{
numb: 4,
question: "What does SQL stand for?",
answer: "Structured Query Language",
options: [
"Stylish Question Language",
"Stylesheet Query Language",
"Statement Question Language",
"Structured Query Language"
]
},
{
numb: 5,
question: "What does XML stand for?",
answer: "eXtensible Markup Language",
options: [
"eXtensible Markup Language",
"eXecutable Multiple Language",
"eXTra Multi-Program Language",
"eXamine Multiple Language"
]
},
{
numb: 6,
question: "Your Question is Here",
options: [
"Option 1",
"option 2",
"option 3",
"option 4"
]
},
];
//selecting all required elements
const start_btn = document.querySelector(".start_btn button");
const info_box = document.querySelector(".info_box");
const exit_btn = info_box.querySelector(".buttons .quit");
const continue_btn = info_box.querySelector(".buttons .restart");
const quiz_box = document.querySelector(".quiz_box");
const result_box = document.querySelector(".result_box");
const option_list = document.querySelector(".option_list");
const time_line = document.querySelector("header .time_line");
const timeText = document.querySelector(".timer .time_left_txt");
const timeCount = document.querySelector(".timer .timer_sec");
// if startQuiz button clicked
start_btn.onclick = ()=>{
info_box.classList.add("activeInfo"); //show info box
}
// if exitQuiz button clicked
exit_btn.onclick = ()=>{
info_box.classList.remove("activeInfo"); //hide info box
}
// if continueQuiz button clicked
continue_btn.onclick = ()=>{
info_box.classList.remove("activeInfo"); //hide info box
quiz_box.classList.add("activeQuiz"); //show quiz box
showQuetions(0); //calling showQestions function
queCounter(1); //passing 1 parameter to queCounter
startTimer(15); //calling startTimer function
startTimerLine(0); //calling startTimerLine function
}
let timeValue = 15;
let que_count = 0;
let que_numb = 1;
let userScore = 0;
let counter;
let counterLine;
let widthValue = 0;
const restart_quiz = result_box.querySelector(".buttons .restart");
const quit_quiz = result_box.querySelector(".buttons .quit");
// if restartQuiz button clicked
restart_quiz.onclick = ()=>{
quiz_box.classList.add("activeQuiz"); //show quiz box
result_box.classList.remove("activeResult"); //hide result box
timeValue = 15;
que_count = 0;
que_numb = 1;
userScore = 0;
widthValue = 0;
showQuetions(que_count); //calling showQestions function
queCounter(que_numb); //passing que_numb value to queCounter
clearInterval(counter); //clear counter
clearInterval(counterLine); //clear counterLine
startTimer(timeValue); //calling startTimer function
startTimerLine(widthValue); //calling startTimerLine function
timeText.textContent = "Time Left"; //change the text of timeText to Time Left
next_btn.classList.remove("show"); //hide the next button
}
// if quitQuiz button clicked
quit_quiz.onclick = ()=>{
window.location.reload(); //reload the current window
}
const next_btn = document.querySelector("footer .next_btn");
const bottom_ques_counter = document.querySelector("footer .total_que");
// if Next Que button clicked
next_btn.onclick = ()=>{
if(que_count < questions.length - 1){ //if question count is less than total question length
que_count++; //increment the que_count value
que_numb++; //increment the que_numb value
showQuetions(que_count); //calling showQestions function
queCounter(que_numb); //passing que_numb value to queCounter
clearInterval(counter); //clear counter
clearInterval(counterLine); //clear counterLine
startTimer(timeValue); //calling startTimer function
startTimerLine(widthValue); //calling startTimerLine function
timeText.textContent = "Time Left"; //change the timeText to Time Left
next_btn.classList.remove("show"); //hide the next button
}else{
clearInterval(counter); //clear counter
clearInterval(counterLine); //clear counterLine
showResult(); //calling showResult function
}
}
// getting questions and options from array
function showQuetions(index){
const que_text = document.querySelector(".que_text");
//creating a new span and div tag for question and option and passing the value using array index
let que_tag = '<span>'+ questions[index].numb + ". " + questions[index].question +'</span>';
let option_tag = '<div class="option"><span>'+ questions[index].options[0] +'</span></div>'
+ '<div class="option"><span>'+ questions[index].options[1] +'</span></div>'
+ '<div class="option"><span>'+ questions[index].options[2] +'</span></div>'
+ '<div class="option"><span>'+ questions[index].options[3] +'</span></div>';
que_text.innerHTML = que_tag; //adding new span tag inside que_tag
option_list.innerHTML = option_tag; //adding new div tag inside option_tag
const option = option_list.querySelectorAll(".option");
// set onclick attribute to all available options
for(i=0; i < option.length; i++){
option[i].setAttribute("onclick", "optionSelected(this)");
}
}
// creating the new div tags which for icons
let tickIconTag = '<div class="icon tick"><i class="fas fa-check"></i></div>';
let crossIconTag = '<div class="icon cross"><i class="fas fa-times"></i></div>';
//if user clicked on option
function optionSelected(answer){
clearInterval(counter); //clear counter
clearInterval(counterLine); //clear counterLine
let userAns = answer.textContent; //getting user selected option
let correcAns = questions[que_count].answer; //getting correct answer from array
const allOptions = option_list.children.length; //getting all option items
if(userAns == correcAns){ //if user selected option is equal to array's correct answer
userScore += 1; //upgrading score value with 1
answer.classList.add("correct"); //adding green color to correct selected option
answer.insertAdjacentHTML("beforeend", tickIconTag); //adding tick icon to correct selected option
console.log("Correct Answer");
console.log("Your correct answers = " + userScore);
}else{
answer.classList.add("incorrect"); //adding red color to correct selected option
answer.insertAdjacentHTML("beforeend", crossIconTag); //adding cross icon to correct selected option
console.log("Wrong Answer");
for(i=0; i < allOptions; i++){
if(option_list.children[i].textContent == correcAns){ //if there is an option which is matched to an array answer
option_list.children[i].setAttribute("class", "option correct"); //adding green color to matched option
option_list.children[i].insertAdjacentHTML("beforeend", tickIconTag); //adding tick icon to matched option
console.log("Auto selected correct answer.");
}
}
}
for(i=0; i < allOptions; i++){
option_list.children[i].classList.add("disabled"); //once user select an option then disabled all options
}
next_btn.classList.add("show"); //show the next button if user selected any option
}
function showResult(){
info_box.classList.remove("activeInfo"); //hide info box
quiz_box.classList.remove("activeQuiz"); //hide quiz box
result_box.classList.add("activeResult"); //show result box
const scoreText = result_box.querySelector(".score_text");
if (userScore > 3){ // if user scored more than 3
//creating a new span tag and passing the user score number and total question number
let scoreTag = '<span>and congrats! , You got <p>'+ userScore +'</p> out of <p>'+ questions.length +'</p></span>';
scoreText.innerHTML = scoreTag; //adding new span tag inside score_Text
}
else if(userScore > 1){ // if user scored more than 1
let scoreTag = '<span>and nice , You got <p>'+ userScore +'</p> out of <p>'+ questions.length +'</p></span>';
scoreText.innerHTML = scoreTag;
}
else{ // if user scored less than 1
let scoreTag = '<span>and sorry , You got only <p>'+ userScore +'</p> out of <p>'+ questions.length +'</p></span>';
scoreText.innerHTML = scoreTag;
}
}
function startTimer(time){
counter = setInterval(timer, 1000);
function timer(){
timeCount.textContent = time; //changing the value of timeCount with time value
time--; //decrement the time value
if(time < 9){ //if timer is less than 9
let addZero = timeCount.textContent;
timeCount.textContent = "0" + addZero; //add a 0 before time value
}
if(time < 0){ //if timer is less than 0
clearInterval(counter); //clear counter
timeText.textContent = "Time Off"; //change the time text to time off
const allOptions = option_list.children.length; //getting all option items
let correcAns = questions[que_count].answer; //getting correct answer from array
for(i=0; i < allOptions; i++){
if(option_list.children[i].textContent == correcAns){ //if there is an option which is matched to an array answer
option_list.children[i].setAttribute("class", "option correct"); //adding green color to matched option
option_list.children[i].insertAdjacentHTML("beforeend", tickIconTag); //adding tick icon to matched option
console.log("Time Off: Auto selected correct answer.");
}
}
for(i=0; i < allOptions; i++){
option_list.children[i].classList.add("disabled"); //once user select an option then disabled all options
}
next_btn.classList.add("show"); //show the next button if user selected any option
}
}
}
function startTimerLine(time){
counterLine = setInterval(timer, 29);
function timer(){
time += 1; //upgrading time value with 1
time_line.style.width = time + "px"; //increasing width of time_line with px by time value
if(time > 549){ //if time value is greater than 549
clearInterval(counterLine); //clear counterLine
}
}
}
function queCounter(index){
let totalQueCounTag = '<span><p>'+ index +'</p> of <p>'+ questions.length +'</p> Questions</span>';
bottom_ques_counter.innerHTML = totalQueCounTag;
}
Congratulations! You’ve successfully created a JavaScript multiple-choice quiz with a timer. This interactive component can enhance user engagement and learning experiences on your website. Feel free to customize and expand upon this code to suit your specific needs.
