Computing

Question 1

1JavaScript is mainly used on websites to

Easy

A. store the whole website B. structure content C. design hardware D. make pages interactive

Question 2

2Which loop prints 1 to 5 in JavaScript?

Medium

A. for i in range(1, 6): print(i) B. repeat 5 { print(i) } C. for (let i = 1; i <= 5; i++) { console.log(i); } D. loop 1 to 5

Question 3

3The DOM (Document Object Model) is

Hard

A. a programming language B. a database C. the browser's tree representation of the page that JavaScript can change D. a server

Question 4

4JavaScript code is placed in an HTML page using the

Easy

A. <script> tag B. <code> tag C. <js> tag D. <link> tag only

Question 5

5Client-side validation alone is enough to keep a website secure.

Hard

A. True B. False

Question 6

6In JavaScript, "3" + 4 gives the string "___".

Hard

Your answer (fill in the blank)

Question 7

7=== checks both value and type in JavaScript.

Medium

A. True B. False

Question 8

8Client-side validation of a form with JavaScript

Hard

A. stores data in a database B. encrypts passwords C. replaces server checks completely D. checks input in the browser before it is sent

Question 9

9What is the value of "5" + 2 in JavaScript?

Hard

A. 7 B. "7" C. "52" D. Error

Question 10

10JavaScript arrays are written with

Easy

A. angle brackets B. square brackets, e.g. [1, 2, 3] C. curly braces only D. round brackets only