Home HTML CSS JavaScript React Gamedatum.com

× Home HTML CSS JavaScript React Gamedatum.com

JS Introduction
JS Variables
JS Objects
JS Operators
JS Functions
JS Events
JS Output
JS Arrays
JS Loops
JavaScript Quiz

Home
JS
Quiz

JavaScript Quiz

Question 1

What is the correct syntax for referring to an external script called "script.js"?

<script src="script.js">
<script href="script.js">
<script name="script.js">
<script type="script.js">

Question 2

What is the output of the following code?
console.log(2 + "2");

"22"
4
"22" (string concatenation)
NaN (not a number)

Question 3

Which of the following is not a JavaScript data type?

int
boolean
string
object

Question 4

What is the result of the following code?
var x = 10;
console.log(x++);

10
11
undefined
10 (post-increment operator returns original value)

Question 5

What is the correct way to declare a JavaScript variable?

var x;
variable x;
x = var;
declare x;

Your score: /5

Your rating:

editor

© Coding for Beginners - All Rights Reserved