Quiz Website Using HTML, CSS & JavaScript (Source Code)
Published: 2023-05-12 07:14:21

Welcome to the CodeWithRandom blog. In this article, We create a Quiz Website using HTML, CSS, And JavaScript. We give you the Complete source code of the Quiz Website.

The main purpose of making a **[Quiz App](https://www.codewithrandom.com/2022/08/04/quiz-app-using-javascript-quiz-app-source-code-codewithrandom/)** is to make javascript concepts clearer and give users access to a web app so they may practice for competitive exams and improve their general knowledge. We'll build a quiz app in this article.

## HTML Code For Quiz App
```
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>Javascript Quiz</title>
        <link rel="stylesheet" href="style1.css" />
        <link
            rel="stylesheet"
            href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.css"
        />
        <link
            rel="stylesheet"
            href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/css/bootstrap.min.css"
        />
    </head>
    <body>
        <header class="header bg-primary">
            <div class="left-title">JS Quiz</div>
            <div class="right-title">
                Total Questions: <span id="tque"></span>
            </div>
            <div class="clearfix"></div>
        </header>
        <div class="content">
            <div class="container-fluid">
                <div class="row">
                    <div class="col-sm-12">
                        <div id="result" class="quiz-body">
                            <form name="quizForm" onSubmit="">
                                <fieldset class="form-group">
                                    <h4>
                                        <span id="qid">1.</span>
                                        <span id="question"></span>
                                    </h4>
                                    <div
                                        class="option-block-container"
                                        id="question-options"
                                    ></div>
                                    <!-- End of option block -->
                                </fieldset>
                                <button
                                    name="previous"
                                    id="previous"
                                    class="btn btn-success"
                                >
                                    Previous
                                </button>
                                &nbsp;
                                <button
                                    name="next"
                                    id="next"
                                    class="btn btn-success"
                                >
                                    Next
                                </button>
                            </form>
                        </div>
                    </div>
                    <!-- End of col-sm-12 -->
                </div>
                <!-- End of row -->
            </div>
            <!-- ENd of container fluid -->
        </div>
        <!-- End of content -->
        <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
        <script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/js/bootstrap.min.js"></script>
        <script src="app.js"></script>
    </body>
</html>

```

**HTML Structure :**

We'll add a few links to the external javascript and CSS files inside the header section before adding structure to our website. Additionally, since we utilised Bootstrap for this project, we need to include certain Bootstrap links in it.
```
<link rel="stylesheet" href="style1.css" />
<link
    rel="stylesheet"
    href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.css"
/>
<link
    rel="stylesheet"
    href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/css/bootstrap.min.css"
/>

```

**Structure:**

 Now using the div tag we will add the container of our quiz app .
Using the div tag we will add two title one is for javascript quiz and another is for counting the total  number of question inside our quiz app.

After that, we will add the structure of a form, such as one with a question, using the bootstrap predefined classes, and we will add the 4 alternatives to each question using the radio type input.

Next, we will construct two buttons with the button tag: one for going to the previous question and one for the following question.

## CSS Code For Quiz App
```
.content { margin-top: 54px; } .header { padding: 15px; position: fixed; top: 0;
width: 100%; z-index: 9999; } .left-title { width: 80px; color: #fff; font-size:
18px; float: left; } .right-title { width: 150px; text-align: right; float:
right; color: #fff; } .quiz-body { margin-top: 15px; padding-bottom: 50px; }
.option-block-container { margin-top: 20px; max-width: 420px; } .option-block {
padding: 10px; background: aliceblue; border: 1px solid #84c5fe; margin-bottom:
10px; cursor: pointer; } .result-question { font-weight: bold; } .c-wrong {
margin-left: 20px; color: #ff0000; } .c-correct { margin-left: 20px; color:
green; } .last-row { border-bottom: 1px solid #ccc; padding-bottom: 25px;
margin-bottom: 25px; } .res-header { border-bottom: 1px solid #ccc;
margin-bottom: 15px; padding-bottom: 15px; }

```

However, some of the default stylings is derived from the bootstrap predefined CSS. We have just contributed a few extra stylings to our quiz app's CSS. The individual elements of our quiz app will get extra padding and margin in our css file using the class selector, making it seem more likable.

## Javascript Code For Quiz App
```
/* Created and coded by Abhilash Narayan */ /* Quiz source: w3schools.com */ var quiz = { "JS": [ { "id": 1, "question": "Inside which HTML element do we put the JavaScript?", "options": [ { "a": "&lt;script&gt;", "b": "&lt;javascript&gt;", "c": "&lt;scripting&gt;", "d": "&lt;js&gt;" } ], "answer": "&lt;script&gt;", "score": 0, "status": "" }, { "id": 2, "question": "Where is the correct place to insert a JavaScript?", "options": [ { "a": "The &lt;head&gt; section", "b": "The &lt;body&gt; section", "c": "Both the &lt;head&gt; section and the &lt;body&gt; section are correct" } ], "answer": "Both the &lt;head&gt; section and the &lt;body&gt; section are correct", "score": 0, "status": "" }, { "id": 3, "question": "What is the correct syntax for referring to an external script called 'xxx.js'?", "options": [ { "a": "&ltscript href=&quot;xxx.js&quot;>", "b": "&lt;script name=&quot;xxx.js&quot;&gt;", "c": "&lt;script src=&quot;xxx.js&quot;&gt;" } ], "answer": "&lt;script src=&quot;xxx.js&quot;&gt;", "score": 0, "status": "" }, { "id": 4, "question": "The external JavaScript file must contain the &lt;script&gt; tag.", "options": [ { "a": "True", "b": "False" } ], "answer": "False", "score": 0, "status": "" }, { "id": 5, "question": "How do you write &quot;Hello World&quot; in an alert box?", "options": [ { "a": "alertBox(&quot;Hello World&quot;);", "b": "msg(&quot;Hello World&quot;);", "c": "alert(&quot;Hello World&quot;);", "d": "msgBox(&quot;Hello World&quot;);", } ], "answer": "alert(&quot;Hello World&quot;);", "score": 0, "status": "" }, { "id": 6, "question": "How do you create a function in JavaScript?", "options": [ { "a": "function myFunction()", "b": "function:myFunction()", "c": "function = myFunction()", } ], "answer": "function myFunction()", "score": 0, "status": "" }, { "id": 7, "question": "How do you call a function named &quot;myFunction&quot;?", "options": [ { "a": "call function myFunction()", "b": "call myFunction()", "c": "myFunction()", } ], "answer": "myFunction()", "score": 0, "status": "" }, { "id": 8, "question": "How to write an IF statement in JavaScript?", "options": [ { "a": "if i = 5 then", "b": "if i == 5 then", "c": "if (i == 5)", "d": " if i = 5", } ], "answer": "if (i == 5)", "score": 0, "status": "" }, { "id": 9, "question": "Which of the following is a disadvantage of using JavaScript?", "options": [ { "a": "Client-side JavaScript does not allow the reading or writing of files.", "b": "JavaScript can not be used for Networking applications because there is no such support available.", "c": "JavaScript doesn't have any multithreading or multiprocess capabilities.", "d": "All of the above." } ], "answer": "All of the above.", "score": 0, "status": "" }, { "id": 10, "question": "How to write an IF statement for executing some code if &quot;i&quot; is NOT equal to 5?", "options": [ { "a": "if (i <> 5)", "b": "if i <> 5", "c": "if (i != 5)", "d": "if i =! 5 then", } ], "answer": "if (i != 5)", "score": 0, "status": "" }, { "id": 11, "question": "How does a WHILE loop start?", "options": [ { "a": "while i = 1 to 10", "b": "while (i &lt;= 10; i++)", "c": "while (i &lt;= 10)" } ], "answer": "while (i &lt;= 10)", "score": 0, "status": "" }, { "id": 12, "question": "How does a FOR loop start?", "options": [ { "a": "for (i = 0; i &lt;= 5)", "b": "for (i = 0; i &lt;= 5; i++)", "c": "for i = 1 to 5", "d": "for (i &lt;= 5; i++)" } ], "answer": "for (i = 0; i &lt;= 5; i++)", "score": 0, "status": "" }, { "id": 13, "question": "How can you add a comment in a JavaScript?", "options": [ { "a": "//This is a comment", "b": "&sbquo;This is a comment", "c": "&lt;!--This is a comment--&gt;" } ], "answer": "//This is a comment", "score": 0, "status": "" }, { "id": 14, "question": "How to insert a comment that has more than one line?", "options": [ { "a": "/*This comment has more than one line*/", "b": "//This comment has more than one line//", "c": "&lt;!--This comment has more than one line--&gt;" } ], "answer": "/*This comment has more than one line*/", "score": 0, "status": "" }, { "id": 15, "question": "What is the correct way to write a JavaScript array?", "options": [ { "a": "var colors = (1:&quot;red&quot;, 2:&quot;green&quot;, 3:&quot;blue&quot;)", "b": "var colors = [&quot;red&quot;, &quot;green&quot;, &quot;blue&quot;]", "c": "var colors = 1 = (&quot;red&quot;), 2 = (&quot;green&quot;), 3 = (&quot;blue&quot;)", "d": "var colors = &quot;red&quot;, &quot;green&quot;, &quot;blue&quot;" } ], "answer": "var colors = [&quot;red&quot;, &quot;green&quot;, &quot;blue&quot;]", "score": 0, "status": "" }, { "id": 16, "question": "How do you round the number 7.25, to the nearest integer?", "options": [ { "a": "rnd(7.25)", "b": "Math.round(7.25)", "c": "Math.rnd(7.25)", "d": "round(7.25)" } ], "answer": "Math.round(7.25)", "score": 0, "status": "" }, { "id": 17, "question": "How do you find the number with the highest value of x and y?", "options": [ { "a": "Math.max(x, y)", "b": "Math.ceil(x, y)", "c": "top(x, y)", "d": "ceil(x, y)" } ], "answer": "Math.max(x, y)", "score": 0, "status": "" }, { "id": 18, "question": "What is the correct JavaScript syntax for opening a new window called &quot;w2&quot;?", "options": [ { "a": "w2 = window.new(&quot;http://www.w3schools.com&quot;);", "b": "w2 = window.open(&quot;http://www.w3schools.com&quot;);" } ], "answer": "w2 = window.open(&quot;http://www.w3schools.com&quot;);", "score": 0, "status": "" }, { "id": 19, "question": "JavaScript is the same as Java.", "options": [ { "a": "true", "b": "false" } ], "answer": "false", "score": 0, "status": "" }, { "id": 20, "question": "How can you detect the client&rsquo;s browser name?", "options": [ { "a": "navigator.appName", "b": "browser.name", "c": "client.navName" } ], "answer": "navigator.appName", "score": 0, "status": "" }, { "id": 21, "question": "Which event occurs when the user clicks on an HTML element?", "options": [ { "a": "onchange", "b": "onclick", "c": "onmouseclick", "d": "onmouseover" } ], "answer": "onclick", "score": 0, "status": "" }, { "id": 22, "question": "How do you declare a JavaScript variable?", "options": [ { "a": "var carName;", "b": "variable carName;", "c": "v carName;" } ], "answer": "var carName;", "score": 0, "status": "" }, { "id": 23, "question": "Which operator is used to assign a value to a variable?", "options": [ { "a": "*", "b": "-", "c": "=", "d": "x" } ], "answer": "=", "score": 0, "status": "" }, { "id": 24, "question": "What will the following code return: Boolean(10 &gt; 9)", "options": [ { "a": "NaN", "b": "false", "c": "true" } ], "answer": "true", "score": 0, "status": "" }, { "id": 25, "question": "Is JavaScript case-sensitive?", "options": [ { "a": "No", "b": "Yes" } ], "answer": "Yes", "score": 0, "status": "" } ] } var quizApp = function () { this.score = 0; this.qno = 1; this.currentque = 0; var totalque = quiz.JS.length; this.displayQuiz = function (cque) { this.currentque = cque; if (this.currentque < totalque) { $("#tque").html(totalque); $("#previous").attr("disabled", false); $("#next").attr("disabled", false); $("#qid").html(quiz.JS[this.currentque].id + '.' ); $("#question").html(quiz.JS[this.currentque].question); $("#question-options").html(""); for (var key in quiz.JS[this.currentque].options[0]) { if (quiz.JS[this.currentque].options[0].hasOwnProperty(key)) { $("#question-options").append( "<div class='form-check option-block'>" + "<label class='form-check-label'>" + "<input type='radio' class='form-check-input' name='option' id='q" + key + "' value='" + quiz.JS[this.currentque].options[0][key] + "'><span id='optionval'>" + quiz.JS[this.currentque].options[0][key] + "</span></label>" ); } } } if (this.currentque <=0) { $("#previous").attr("disabled", true); } if (this.currentque>= totalque) { $('#next').attr('disabled', true); for (var i = 0; i < totalque; i++) { this.score=this.score + quiz.JS[i].score; } return this.showResult(this.score); } } this.showResult=function (scr) { $("#result").addClass('result'); $("#result").html("<h1 class='res-header'>Total Score: &nbsp;" + scr + '/' + totalque + "</h1>"); for (var j = 0; j
                < totalque; j++) { var res; if (quiz.JS[j].score==0) { res='<span class="wrong">' + quiz.JS[j].score + '</span><i class="fa fa-remove c-wrong"></i>' ; } else { res='<span class="correct">' + quiz.JS[j].score + '</span><i class="fa fa-check c-correct"></i>' ; } $("#result").append( '<div class="result-question"><span>Q ' + quiz.JS[j].id + '</span> &nbsp;' + quiz.JS[j].question + '</div>' + '<div><b>Correct answer:</b> &nbsp;' + quiz.JS[j].answer + '</div>' + '<div class="last-row"><b>Score:</b> &nbsp;' + res + '</div>' ); } } this.checkAnswer=function (option) { var answer=quiz.JS[this.currentque].answer; option=option.replace(/</g, "&lt;" ) //for < option=option.replace( />/g, "&gt;") //for > option = option.replace(/"/g, "&quot;") if (option == quiz.JS[this.currentque].answer) { if (quiz.JS[this.currentque].score == "") { quiz.JS[this.currentque].score = 1; quiz.JS[this.currentque].status = "correct"; } } else { quiz.JS[this.currentque].status = "wrong"; } } this.changeQuestion = function (cque) { this.currentque = this.currentque + cque; this.displayQuiz(this.currentque); } } var jsq = new quizApp(); var selectedopt; $(document).ready(function () { jsq.displayQuiz(0); $('#question-options').on('change', 'input[type=radio][name=option]', function (e) { //var radio = $(this).find('input:radio'); $(this).prop("checked", true); selectedopt = $(this).val(); }); }); $('#next').click(function (e) { e.preventDefault(); if (selectedopt) { jsq.checkAnswer(selectedopt); } jsq.changeQuestion(1); }); $('#previous').click(function (e) { e.preventDefault(); if (selectedopt) { jsq.checkAnswer(selectedopt); } jsq.changeQuestion(-1); });
```

First, we built an object in our Javascript, and then we added a question with a certain ID number to that object. We have built 25 questions in total and placed them within our object. 

The user will receive the quiz task's outcome at the end of the quiz by utilizing the conditional statements to verify, as the user clicks on any of the alternatives, if and else statements, whether the answer they choose matches the proper response.

Now that we have completed our javascript section Quiz App. our updated output with Html, CSS, and Javascript For Quiz App.

Hope you like the Quiz App. you can see the output video and project screenshots. See our other blogs and gain knowledge in front-end development. Thank you!

This post teaches us how to create a **[Quiz App](https://www.codewithrandom.com/2022/08/04/quiz-app-using-javascript-quiz-app-source-code-codewithrandom/)** Using using simple HTML & CSS and javascript. If we made a mistake or any confusion, please drop a comment to reply or help you in easy learning.

Written by - Code With Random/Anki

Code By - Abhilash Narayan