How to Build a Simple Quiz App with a Timer Using HTML, CSS, and JavaScript?

Trixy · 2025-02-27T03:33:40+0000

Title: How to Build a Simple Quiz App with a Timer Using HTML, CSS, and JavaScript?

In this tutorial, we will create a simple Quiz Application with Timer using HTML, CSS, and JavaScript. This step-by-step guide aims to provide you with a strong foundation and a practical example to kickstart your journey in developing similar interactive applications. By the end of this tutorial, you'll have a functional quiz app with a countdown timer to enhance user engagement.

What Does the Quiz Application with Timer Do?

The Simple Quiz Application with Timer is a user-friendly and interactive tool designed to test knowledge with a time-bound challenge. This application presents users with a quiz containing 5 multiple-choice questions. Users must complete the quiz within a time limit of 2 minutes and 30 seconds. If the timer runs out, the application automatically displays the results, even if some questions are left unanswered.

As users select their answers, the application instantly checks their response. Correct answers are highlighted with a green background, while incorrect choices are marked with a red background. This immediate feedback enhances the learning experience, making the quiz engaging and informative.

Let's start the coding part!

Step 1: Creating a JSON File

First, let's create a new JSON file. This file will store the data for the quiz questions that will be presented to the users. The JSON structure consists of objects with the following keys:

id: A unique identifier for each question.
question: The text of the question to be displayed.
choices: An array of possible answers.
answer: The correct answer, represented by the index of the correct choice in the choices array.

Below is an example of a JSON data structure created for this tutorial to define the quiz questions and answers:

data.json

[
{
"id"

:

1

,
"question"

:

"Which of the following is a JavaScript framework?"

,
"choices"

:

[

"Django"

,

"React"

,

"Flask"

,

"Ruby"

]

,
"answer"

:

1
}

,
{
"id"

:

2

,
"question"

:

"What does HTML stand for?"

,
"choices"

:

[

"Hyper Text Markup Language"

,

"High Transfer Markup Language"

,

"Hyperlinks and Text Markup Language"

,

"Hyper Transfer Machine Language"

]

,
"answer"

:

0
}

,
{
"id"

:

3

,
"question"

:

"Which of the following is used to declare a variable in Python?"

,
"choices"

:

[

"var"

,

"let"

,

"def"

,

"None of the above"

]

,
"answer"

:

3
}

,
{
"id"

:

4

,
"question"

:

"What is the output of console.log(typeof null) in JavaScript?"

,
"choices"

:

[

"null"

,

"undefined"

,

"object"

,

"string"

]

,
"answer"

:

2
}

,
{
"id"

:

5

,
"question"

:

"Which of these is not a valid CSS property?"

,
"choices"

:

[

"color"

,

"font-size"

,

"text-align"

,

"print-mode"

]

,
"answer"

:

3
}
]

Step 2: Creating the Interface

Next, let's create the HTML file for our Quiz Application. This file will contain the essential elements for the application's structure, such as the header, timer, and placeholders for questions and choices. Note that the actual questions and choices will be dynamically generated and are not included directly in this file. Below is an example of the HTML code created for this tutorial:

index.html

<!DOCTYPE html>
<html

lang

=

"en"

>
<head

>
<meta

charset

=

"UTF-8"

>
<meta

name

=

"viewport"

content

=

"width=device-width, initial-scale=1.0"

>
<title

>

Quiz App with Timer</

title

>
<link

rel

=

"stylesheet"

href

=

"https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,[email protected],100..700,0..1,-50..200"

/

>
<link

rel

=

"stylesheet"

href

=

"style.css"

>
<script

src

=

"https://code.jquery.com/jquery-3.7.1.min.js"

></

script

>
</

head

>
<body

>
<div

id

=

"main-wrapper"

>
<div

id

=

"app-title"

>

Quiz App with Timer using HTML, CSS, and JavaScript</

div

>
<div

class

=

"flex-container align-center justify-center w-100"

>
<button

id

=

"start-button"

type

=

"button"

><span

class

=

"material-symbols-outlined"

>

contract_edit</

span

>

Start Quiz</

button

>
</

div

>
<div

id

=

"quiz-container"

>
<div

class

=

"flex-container align-center justify-between w-100"

>
<div

class

=

"flex-grow-1"

>
<span

>

Question #</

span

>
<span

id

=

"current_question_number"

></

span

>
<span

>

 

out of 

</

span

>
<span

id

=

"total_question_number"

></

span

>
</

div

>
<div

id

=

"timer-container"

class

=

"flex-container align-center justify-center"

>
<span

class

=

"material-symbols-outlined"

>

timer</

span

>
<span

id

=

"timer"

>

00:00</

span

>
</

div

>
</

div

>
<hr

class

=

"hr-light"

>
<div

id

=

"quiz-list"

></

div

>
<div

id

=

"quiz-actions"

class

=

"flex-container w-100 align-center justify-end"

>
<button

id

=

"prev-question-btn"

class

=

"quiz-action-btn"

type

=

"button"

><span

class

=

"material-symbols-outlined"

>

chevron_left</

span

>

Prev</

button

>
<button

id

=

"next-question-btn"

class

=

"quiz-action-btn"

type

=

"button"

><span

class

=

"material-symbols-outlined"

>

chevron_right</

span

>

Next</

button

>
<button

id

=

"finish-question-btn"

class

=

"quiz-action-btn"

type

=

"button"

><span

class

=

"material-symbols-outlined"

>

check_small</

span

>

Finish</

button

>
</

div

>
</

div

>
<div

id

=

"quiz-result"

>
<div

id

=

"quiz-result-text"

>
</

div

>
<div

class

=

"flex-container align-center justify-center w-100"

>
<button

id

=

"restart-button"

type

=

"button"

><span

class

=

"material-symbols-outlined"

>

contract_edit</

span

>

Restart Quiz</

button

>
</

div

>
</

div

>
</

div

>
<script

src

=

"script.js"

></

script

>
</

body

>
</

html

>

Step 3: Designing the Interface

Now, let's create the custom Cascading Stylesheet (CSS) for our application. This file defines the visual design and layout of the application's elements, ensuring a user-friendly and visually appealing interface. Below is the CSS code crafted for this tutorial:

style.css

@import

url

(

'https://fonts.googleapis.com/css2?f...00;0,700;1,300;1,400;1,500;1,700&display=swap'

)

;
*

{
font-family

:

"Ubuntu"

,

serif

;
font-weight

:

400

;
font-style

:

normal

;
box-sizing

:

border-box

;
}
html,

body {
margin

:

unset;
padding

:

unset;
height

:

100%

;
min-height

:

100%

;
width

:

100%

;
min-width

:

100%

;
overflow

:

auto

;
}
body {
display

:

flex;
flex-flow

:

column wrap;
justify-content

:

center

;
align-items

:

center

;
background-color

:

#4290fb

;
background-image

:

linear-gradient(

89.5deg

,

rgba

(

131

,

204

,

255

,

1

)

0.4%

,

rgba

(

66

,

144

,

251

,

1

)

100.3%

)

;
}
.fs-light

{
font-weight

:

300

;
}
.fs-midium

{
font-weight

:

500

;
}
.fs-bold

{
font-weight

:

700

;
}
#main-wrapper

{
max-height

:

100%

;
width

:

100%

;
max-width

:

500px

;
padding

:

15px

15px

;
}
#app-title

{
font-size

:

20px

;
color

:

#fff

;
font-weight

:

700

;
letter-spacing

:

1px

;
text-align

:

center

;
margin-bottom

:

10px

;
}
.flex-container{
display

:

flex;
}
.w-100

{
width

:

100%

;
}
.align-center{
align-items

:

center

;
}
.justify-center{
justify-content

:

center

;
}
.justify-between{
justify-content

:

space-between;
}
.justify-end{
justify-content

:

end

;
}
.flex-grow-1

{
flex-grow

:

1

;
}
hr.hr-light

{
border-color

:

#ffffff2b

;
}
#start-button

,
#restart-button

{
display

:

flex;
align-items

:

center

;
justify-content

:

center

;
background

:

#3D3BF3

;
color

:

#fff

;
border

:

unset;
outline

:

unset;
padding

:

5px

30px

;
border-radius

:

3px

;
font-weight

:

600

;
letter-spacing

:

1.2px

;
cursor

:

pointer

;
margin-bottom

:

20px

;
}
#start-button

:

hover

,
#start-button

:

active

,
#restart-button

:

hover

,
#restart-button

:

active
{
background

:

#0200b6

;
}
#quiz-container

{
display

:

none

;
width

:

100%

;
padding

:

15px

15px

;
background

:

#fff

;
border-radius

:

5px

;
box-shadow

:

2px

5px

7px

#00000068

;
color

:

#494949

;
}
#timer

{
font-weight

:

600

;
}
div#quiz-list

{
width

:

100%

;
padding

:

15px

10px

;
overflow

:

hidden

;
/* position: relative; */
display

:

flex;
}
#quiz-list

.quiz-item{
width

:

100%

;
min-height

:

100%

;
flex

:

none

;
background-color

:

#fff

;
}
#quiz-list

.trans-prev

.quiz-item

:

not

(

.item-trans)

{
transform

:

translateX(

-100%

)

;
}
#quiz-list

.trans-next

.quiz-item

.item-trans{
transform

:

translateX(

0%

)

;
}
#quiz-list

.trans-prev

.quiz-item

.item-trans{
transform

:

translateX(

-100%

)

;
}
#quiz-list

.quiz-item

.animate-trans{
transition

:

all .5s

ease-in-out;
}
#quiz-list

.trans-next

.quiz-item

.animate-trans

.start

.item-trans

{
transform

:

translateX(

-100%

)

;
}
#quiz-list

.trans-prev

.quiz-item

.animate-trans

.start

.item-trans

{
transform

:

translateX(

100%

)

;
}
#quiz-list

.trans-next

.quiz-item

.animate-trans

.start

:

not

(

.item-trans)

{
transform

:

translateX(

-100%

)

;
}
#quiz-list

.trans-prev

.quiz-item

.animate-trans

.start

:

not

(

.item-trans)

{
transform

:

translateX(

100%

)

;
}
#quiz-list

.quiz-item

.quiz-item-question{
font-size

:

14px

;
padding

:

20px

5px

;
}
#quiz-list

.quiz-item

.quiz-item-choices{
width

:

100%

;
}
#quiz-list

.quiz-item

.quiz-choice{
display

:

block

;
width

:

100%

;
padding

:

10px

10px

;
text-decoration

:

none

;
color

:

inherit

;
border

:

1px

solid

#49494929

;
border-radius

:

3px

;
margin-bottom

:

10px

;
box-shadow

:

2px

3px

5px

#0000002b

;
transition

:

all .2s

ease-in-out;
}
#quiz-list

.quiz-item

.quiz-choice

:

hover

{
transform

:

translateY(

-2px

)

;
background

:

#f6f6f6

;
}
#quiz-list

.quiz-item

.quiz-choice

.correct

{
transform

:

translateY(

-2px

)

;
background

:

#52e4882b

;
}
#quiz-list

.quiz-item

.quiz-choice

.wrong

{
transform

:

translateY(

-2px

)

;
background

:

#e45c522b

;
}
#quiz-list

.quiz-item

.quiz-choice

.disabled{
user-select:

none

;
cursor

:

not-allowed;
}
button.quiz-action-btn

{
display

:

flex;
align-items

:

center

;
justify-content

:

center

;
margin

:

0

5px

;
border

:

unset;
border-radius

:

3px

;
background

:

#0A5EB0

;
color

:

#fff

;
padding

:

5px

15px

;
cursor

:

pointer

;
}
#quiz-result

{
display

:

none

;
}
div#quiz-result-text

{
color

:

#fff

;
text-align

:

center

;
margin

:

20px

0

;
}

Step 4: Creating the Main Functions

Finally, let's create the JavaScript file. This file contains the essential JavaScript code that powers the functionality of the Quiz Application with Timer. The JavaScript manages features like loading questions, validating answers, keeping track of the timer, and displaying results. To make the code more efficient and easier to write, I have also utilized jQuery. Below is the JavaScript code for your reference:

script.js

// Quiz Start Button
const

StartBtn =

$(

'#start-button'

)
// Quiz Restart Button
const

RestartBtn =

$(

'#restart-button'

)
// Quiz Questionnaire Container
const

Questionnaire =

$(

'#quiz-container'

)
// Quiz List Container
const

QuizList =

$(

"#quiz-list"

)
// Quiz Item Element to Clone
const

QuizItem =

$(

`
<

div class

=

"quiz-item"

>
<

div class

=

"quiz-item-question"

>

Lorem ipsum dolor sit amet,

consectetur adipiscing elit</

div>
<

div class

=

"quiz-item-choices"

>
</

div>
</

div>
`)
const

QuizChoiceEL =

$(

`
<

a href=

"javascript:void(0)"

class

=

"quiz-choice"

>

Choice 101

</

a>
`)
// Previous Button
const

PrevBtn =

$(

'#prev-question-btn'

)
// Next Button
const

NextBtn =

$(

'#next-question-btn'

)
// Finish Button
const

FinishBtn =

$(

'#finish-question-btn'

)
// Current Question Number
const

CurrentQNumber =

$(

'#current_question_number'

)
// Total Question Number
const

TotalQNumber =

$(

'#total_question_number'

)
// Result Container
const

ResultContainer =

$(

'#quiz-result'

)
// Result Text
const

ResultText =

$(

'#quiz-result-text'

)
// Timer Element
const

timerEL =

$(

'#timer'

)
var

questions =

[

]

;
var

currentQindex =

0

;
var

timerSec =

150

;
var

score =

0

;
var

answerArr =

[

]

;
var

TimerInterval;
// Load JSON Data
async function

fetch_data(

)

{
return

await fetch(

"data.json"

)
.then

(

response =>

{
if

(

!

response.ok

)

{
console.error

(

response)

;
}
return

response.json

(

)

;
}

)
.then

(

data =>

{
return

(

data)
}

)
.catch

(

error =>

{
console.log

(

error)
}

)
}
function

shuffle(

arrData)

{
let curIndx =

arrData.length

;
while (

curIndx !=

0

)

{
let randIndx =

Math

.floor

(

Math

.random

(

)

*

curIndx)

;
curIndx--;
[

arrData[

curIndx]

,

arrData[

randIndx]

]

=

[
arrData[

randIndx]

,

arrData[

curIndx]

]

;
}
}
function

check_ans(

el)

{
el.find

(

".quiz-choice"

)

.click

(

function

(

e)

{
e.preventDefault

(

)
if

(

$(

this

)

.hasClass

(

"disabled"

)

)
return

;
var

choiceKey =

$(

this

)

[

0

]

.dataset

.key
var

id =

el[

0

]

.dataset

.id
var

correct_ans;
for

(

var

i =

0

;

i <

questions.length

;

i++

)

{
if

(

questions[

i]

.id

==

id)

{
correct_ans =

questions[

i]

.answer
}
}
if

(

choiceKey ==

correct_ans)

{
$(

this

)

.addClass

(

"correct"

)

;
score++;
}

else

{
$(

this

)

.addClass

(

"wrong"

)
el.find

(

`.quiz

-

choice[

data-

key=

"${correct_ans}"

]

`)

.addClass

(

"correct"

)
}
el.find

(

`.quiz

-

choice`)

.addClass

(

"disabled"

)
answerArr.push

(

{

id:

id,

correct:

correct_ans,

wrong:

(

(

choiceKey !=

correct_ans)

?

choiceKey :

""

)

}

)
}

)
}
function

showResult(

)

{
Questionnaire.toggle

(

false

)
ResultText.text

(

`Your Total Correct Answer is ${

score}

out of `+

questions.length

+

`.`)
ResultContainer.toggle

(

true

)
clearInterval(

TimerInterval)
}
// Check if Question Already Answered
function

chech_if_answered(

el)

{
var

id =

el[

0

]

.dataset

.id

;
if

(

answerArr.length

>

0

)

{
for

(

var

i =

0

;

i <

answerArr.length

;

i++

)

{
if

(

answerArr[

i]

.id

==

id)

{
el.find

(

`.quiz

-

choice[

data-

key=

"${answerArr.correct}"

]

`)

.addClass

(

"correct"

)

[*]if

(

answerArr[

i]

.wrong

>

0

)

[*]el.find

(

`.quiz

-

choice[

data-

key=

"${answerArr.wrong}"

]

`)

.addClass

(

"wrong"

)

;

[*]el.find

(

`.quiz

-

choice`)

.addClass

(

"disabled"

)

[*]}

[*]}

[*]}

[*]}

[*]

[*]// Computing and Updating Timer

[*]function

computeTimer(

time)

{

[*]var

min =

Math

.floor

(

time /

60

)

|

0

;

[*]var

sec =

Math

.ceil

(

time -

(

min *

60

)

)

;

[*]

[*]min =

String

(

min)

.padStart

(

2

,

'0'

)

;

[*]sec =

String

(

sec)

.padStart

(

2

,

'0'

)

;

[*]

[*]timerEL.text

(

`${

min}

:

${

sec}

`)

[*]}

[*]function

startQuiz(

)

{

[*]if

(

!

questions[

currentQindex]

)

{

[*]alert(

"Questions are not listed yet!"

)

;

[*]return

;

[*]}

[*]currentQindex =

0

;

[*]score =

0

;

[*]score =

0

;

[*]answerArr =

[

]

;

[*]QuizList.html

(

''

)

[*]CurrentQNumber.text

(

currentQindex+

1

)

[*]

[*]timerSec =

150

;

[*]computeTimer(

timerSec)

[*]StartBtn.toggle

(

false

)

[*]

[*]Questionnaire.toggle

(

true

)

[*]

[*]PrevBtn.toggle

(

false

)

[*]NextBtn.toggle

(

false

)

[*]FinishBtn.toggle

(

false

)

[*]

[*]var

itemEL =

QuizItem.clone

(

true

)

;

[*]itemEL[

0

]

.dataset

.id

=

questions[

currentQindex]

.id

;

[*]itemEL.find

(

".quiz-item-question"

)

.text

(

questions[

currentQindex]

.question

)

;

[*]

[*]for

(

var

i =

0

;

i <

questions[

currentQindex]

.choices

.length

;

i++

)

{

[*]var

choiceEl =

QuizChoiceEL.clone

(

true

)

;

[*]choiceEl[

0

]

.dataset

.key

=

i;

[*]choiceEl.text

(

questions[

currentQindex]

.choices

[

i]

)

;

[*]itemEL.find

(

".quiz-item-choices"

)

.append

(

choiceEl)

[*]}

[*]QuizList.append

(

itemEL)

;

[*]check_ans(

itemEL)

;

[*]NextBtn.toggle

(

true

)

;

[*]TimerInterval =

setInterval(

function

(

)

{

[*]timerSec--;

[*]computeTimer(

timerSec)

[*]console.log

(

timerSec)

[*]if

(

timerSec <=

0

)

{

[*]clearInterval(

TimerInterval)

;

[*]showResult(

)

;

[*]return

;

[*]}

[*]}

,

1000

)

[*]}

[*]$(

document)

.ready

(

function

(

)

{

[*]// Load Data

[*]fetch_data(

)

.then

(

questionData =>

{

[*]questions =

questionData;

[*]shuffle(

questions)

;

[*]TotalQNumber.text

(

questions.length

)

[*]

[*]// Starting the Quiz event

[*]StartBtn.click

(

function

(

e)

{

[*]e.preventDefault

(

)

[*]startQuiz(

)

[*]}

)

[*]

[*]// Navigate to Next Question Event

[*]NextBtn.click

(

function

(

e)

{

[*]e.preventDefault

(

)

[*]currentQindex++;

[*]CurrentQNumber.text

(

currentQindex+

1

)

[*]

[*]PrevBtn.attr

(

"disabled"

,

true

)

[*]NextBtn.attr

(

"disabled"

,

true

)

[*]FinishBtn.attr

(

"disabled"

,

true

)

[*]

[*]var

itemEL =

QuizItem.clone

(

true

)

;

[*]

[*]itemEL[

0

]

.dataset

.id

=

questions[

currentQindex]

.id

;

[*]itemEL.find

(

".quiz-item-question"

)

.text

(

questions[

currentQindex]

.question

)

;

[*]

[*]for

(

var

i =

0

;

i <

questions[

currentQindex]

.choices

.length

;

i++

)

{

[*]var

choiceEl =

QuizChoiceEL.clone

(

true

)

;

[*]choiceEl[

0

]

.dataset

.key

=

i;

[*]choiceEl.text

(

questions[

currentQindex]

.choices

[

i]

)

;

[*]itemEL.find

(

".quiz-item-choices"

)

.append

(

choiceEl)

[*]}

[*]itemEL.addClass

(

"item-trans"

)

[*]QuizList.addClass

(

"trans-next"

)

[*]QuizList.append

(

itemEL)

;

[*]check_ans(

itemEL)

;

[*]chech_if_answered(

itemEL)

;

[*]// itemEL.css("width", Questionnaire.innerWidth())

[*]// itemEL.siblings(".quiz-item").css("width", Questionnaire.innerWidth())

[*]

[*]itemEL.addClass

(

"animate-trans"

)

[*]itemEL.siblings

(

".quiz-item"

)

.addClass

(

"animate-trans"

)

[*]setTimeout(

function

(

)

{

[*]

[*]itemEL.addClass

(

"start"

)

[*]itemEL.siblings

(

".quiz-item"

)

.addClass

(

"start"

)

[*]}

,

100

)

[*]setTimeout(

function

(

)

{

[*]QuizList.removeClass

(

"trans-next"

)

[*]

[*]itemEL.removeClass

(

"item-trans"

)

[*]itemEL.removeClass

(

"animate-trans"

)

[*]itemEL.removeClass

(

"start"

)

[*]

[*]itemEL.siblings

(

".quiz-item"

)

.remove

(

)

[*]

[*]PrevBtn.attr

(

"disabled"

,

false

)

[*]NextBtn.attr

(

"disabled"

,

false

)

[*]FinishBtn.attr

(

"disabled"

,

false

)

[*]}

,

500

)

[*]PrevBtn.toggle

(

currentQindex >

0

)

[*]NextBtn.toggle

(

currentQindex <

(

questions.length

-

1

)

)

[*]FinishBtn.toggle

(

currentQindex ==

(

questions.length

-

1

)

)

[*]}

)

[*]

[*]// Navigate to Prev Question Event

[*]PrevBtn.click

(

function

(

e)

{

[*]e.preventDefault

(

)

[*]currentQindex--;

[*]CurrentQNumber.text

(

currentQindex+

1

)

[*]

[*]PrevBtn.attr

(

"disabled"

,

true

)

[*]NextBtn.attr

(

"disabled"

,

true

)

[*]FinishBtn.attr

(

"disabled"

,

true

)

[*]

[*]var

itemEL =

QuizItem.clone

(

true

)

;

[*]

[*]itemEL[

0

]

.dataset

.id

=

questions[

currentQindex]

.id

;

[*]itemEL.find

(

".quiz-item-question"

)

.text

(

questions[

currentQindex]

.question

)

;

[*]

[*]for

(

var

i =

0

;

i <

questions[

currentQindex]

.choices

.length

;

i++

)

{

[*]var

choiceEl =

QuizChoiceEL.clone

(

true

)

;

[*]choiceEl[

0

]

.dataset

.key

=

i;

[*]choiceEl.text

(

questions[

currentQindex]

.choices

[

i]

)

;

[*]itemEL.find

(

".quiz-item-choices"

)

.append

(

choiceEl)

[*]}

[*]itemEL.addClass

(

"item-trans"

)

[*]QuizList.addClass

(

"trans-prev"

)

[*]QuizList.prepend

(

itemEL)

;

[*]check_ans(

itemEL)

;

[*]chech_if_answered(

itemEL)

;

[*]

[*]// itemEL.css("width", Questionnaire.innerWidth())

[*]// itemEL.siblings(".quiz-item").css("width", Questionnaire.innerWidth())

[*]

[*]

[*]setTimeout(

function

(

)

{

[*]itemEL.addClass

(

"start"

)

[*]itemEL.siblings

(

".quiz-item"

)

.addClass

(

"start"

)

[*]itemEL.addClass

(

"animate-trans"

)

[*]itemEL.siblings

(

".quiz-item"

)

.addClass

(

"animate-trans"

)

[*]}

,

100

)

[*]setTimeout(

function

(

)

{

[*]QuizList.removeClass

(

"trans-prev"

)

[*]

[*]itemEL.removeClass

(

"item-trans"

)

[*]itemEL.removeClass

(

"animate-trans"

)

[*]itemEL.removeClass

(

"start"

)

[*]

[*]itemEL.siblings

(

".quiz-item"

)

.remove

(

)

[*]

[*]PrevBtn.attr

(

"disabled"

,

false

)

[*]NextBtn.attr

(

"disabled"

,

false

)

[*]FinishBtn.attr

(

"disabled"

,

false

)

[*]}

,

500

)

[*]PrevBtn.toggle

(

currentQindex !=

0

)

[*]NextBtn.toggle

(

currentQindex <

(

questions.length

-

1

)

)

[*]FinishBtn.toggle

(

false

)

[*]}

)

[*]FinishBtn.click

(

function

(

e)

{

[*]e.preventDefault

(

)

[*]showResult(

)

[*]}

)

[*]

[*]RestartBtn.click

(

function

(

e)

{

[*]e.preventDefault

(

)

[*]ResultContainer.toggle

(

false

)

[*]startQuiz(

)

[*]}

)

[*]

[*]}

)

[*]}

)

Snapshotes

Below are some snapshots showcasing the results of the Quiz Application with Timer created using the source code provided above. These images demonstrate the application's interface and functionality, including the dynamic quiz questions, timer, and result display:

When Application Page is Loaded

Question and Answer Validation

Result

I have provided the complete source code as a downloadable zip file on this website. You can find the download button located at the end of this article. Feel free to download the source code and customize it to suit your specific project requirements or to explore and enhance its functionality.

There you have it. I hope this Quiz Application with Timer Tutorial will help you with what you are loking for and you'll find something useful for your future web application.

Explore more on this website for more Tutorials, Free Source Codes, and Articles covering various programming languages.

Happy Coding =)

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How to Build a Simple Quiz App with a Timer Using HTML, CSS, and JavaScript?

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