123

Pen Settings

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

You're using npm packages, so we've auto-selected Babel for you here, which we require to process imports and make it all work. If you need to use a different JavaScript preprocessor, remove the packages in the npm tab.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Use npm Packages

We can make npm packages available for you to use in your JavaScript. We use webpack to prepare them and make them available to import. We'll also process your JavaScript with Babel.

⚠️ This feature can only be used by logged in users.

Code Indentation

     

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <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 -->
            
          
!
            
              .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; }
            
          
!
            
              /* 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);
	});	




            
          
!
999px
🕑 One or more of the npm packages you are using needs to be built. You're the first person to ever need it! We're building it right now and your preview will start updating again when it's ready.

Console