Hello readers, Today in this blog you’ll learn how to Create a Quiz Application with Timer using HTML CSS & JavaScript. Earlier I’ve shared a blog on how to Create a Responsive Personal Portfolio Website and now it’s time to create Quiz Web App using JavaScript.
In this program [Quiz App with Timer], there are three layers or boxes, and these boxes shown one by one on a particular button clicked. At first, on the webpage, there is shown a button labeled as “Start Quiz” and when you clicked on that button, then the info box appears with popup animation.
In this infobox, there are some rules of the quiz and two buttons labeled as “Exit” and “Continue”. When you clicked on the Exit button, the info box will be hidden but when you clicked on the Continue button, then the Quiz Box appears.
In the Quiz Box, there is a header with a title on the left side and a timer box on the right side. This timer starts decrement from 15 to 0 sec and there is also shown a timeline indicator that is sliding from the left to right side according to the timer. If the user selects an option between 15 to 0 sec, the timer will be stopped and all available options will be disabled.
If the user selected option is correct, the selected option color, background color changed to green and there is also shown the tick icon to inform the user that the selected answer is correct. If the user selects an option that is incorrect, the selected option color, background color changed to red and there is shown the cross icon to inform the user that the selected option is incorrect and the correct option will be automatically selected.
If the user doesn’t select an option between 15 to 0 sec, the timer will be stopped once it comes in 0 and the correct option of that question will be selected automatically. After that, there is the next button to show the next question, and there is a total of five questions on this Quiz.
In the end, the result box will be appeared and shown the user score and two buttons [Replay Quiz, Quit Quiz], if the user clicked on the replay quiz button, the quiz will again start with the number 1 question, and the score of the user will be 0 but if the user clicked on the quit quiz button, the current window will be reloaded and the quiz starts from the begin.
Video Tutorial of Create a Quiz App with Timer
In the video, you have seen the actual preview of the Quiz Application with Timer and I hope you’ve understood the codes behind creating this Quiz Box layout. In this video, I’ve only written the HTML & CSS codes, and in the second part of this video, I’ve completed the JavaScript codes of this program. If you haven’t watched part 2 of this video, click here to watch it now.
You can use this Quiz and also you can add more questions to this Quiz. In the source codes, I’ve written many comments on how you can add more questions and explained each JavaScript line of this Quiz. If you’re a beginner, you may have difficulties understanding the JavaScript codes but you can easily understand the HTML & CSS codes and I’ve tried to explain all JavaScript line with comments, hope you will understand.
To create this program (Quiz Application with Timer). First, you need to create four Files one HTML File, CSS File and the other two are JavaScript files. After creating these files just paste the following codes in your file.
First, create an HTML file with the name of index.html and paste the given codes in your HTML file. Remember, you’ve to create a file with .html extension.
<!DOCTYPE html> <!-- Created By CodingNepal - www.codingnepalweb.com --> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Awesome Quiz App | CodingNepal</title> <link rel="stylesheet" href="style.css"> <!-- FontAweome CDN Link for Icons --> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.3/css/all.min.css"/> </head> <body> <!-- 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"> <!-- Here I've inserted question from JavaScript --> </div> <div class="option_list"> <!-- Here I've inserted options from JavaScript --> </div> </section> <!-- footer of Quiz Box --> <footer> <div class="total_que"> <!-- Here I've inserted Question Count Number from JavaScript --> </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"> <!-- Here I've inserted Score Result from JavaScript --> </div> <div class="buttons"> <button class="restart">Replay Quiz</button> <button class="quit">Quit Quiz</button> </div> </div> <!-- Inside this JavaScript file I've inserted Questions and Options only --> <script src="js/questions.js"></script> <!-- Inside this JavaScript file I've coded all Quiz Codes --> <script src="js/script.js"></script> </body> </html> </html>
Second, create a CSS file with the name of style.css and paste the given codes in your CSS file. Remember, you’ve to create a file with .css extension.
/* 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; }
Last, create a JavaScript file with the name of questions.js and paste the given codes in your JavaScript file. Remember, you’ve to create a file with .js extension. In this file, we store all questions in an array.
// creating an array and passing the number, questions, options, and answers 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" ] }, // you can uncomment the below codes and make duplicate as more as you want to add question // but remember you need to give the numb value serialize like 1,2,3,5,6,7,8,9..... // { // numb: 6, // question: "Your Question is Here", // answer: "Correct answer of the question is here", // options: [ // "Option 1", // "option 2", // "option 3", // "option 4" // ] // }, ];
Last, create a JavaScript file with the name of script.js and paste the given codes in your JavaScript file. Remember, you’ve to create a file with .js extension.
//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){ //creating a new span tag and passing the question number and total question let totalQueCounTag = '<span><p>'+ index +'</p> of <p>'+ questions.length +'</p> Questions</span>'; bottom_ques_counter.innerHTML = totalQueCounTag; //adding new span tag inside bottom_ques_counter }
That’s all, now you’ve successfully created a Create a Quiz App with Timer using HTML CSS & JavaScript. If your code doesn’t work or you’ve faced any error/problem then please download the source code files from the given download button. It’s free and a .zip file will be downloaded then you’ve to extract it.