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JavaScript

4.0
(27 votes)
8 questions
English
AI Generated
Test your knowledge of JavaScript, the popular programming language used for web development. Follow me on telegram: https://t.me/boost/studyacademys
1
48 random squares
AI Generated

Which company developed JavaScript?

Netscape

Apple

Google

Microsoft

49% got this right

JavaScript was created in 10 days by Brendan Eich in 1995.
2
48 random squares
AI Generated

What is the default value of a variable declared with 'let'?

Undefined

0

NaN

Null

39% got this right

Variables declared with 'let' are initialized with a value of 'undefined' if not assigned a value.
3
48 random squares
AI Generated

Which of these are JavaScript data types?

Boolean

String

Character

Integer

Hard  23% got this right

JavaScript has 7 data types: string, number, boolean, null, undefined, object, and symbol.
4
48 random squares
AI Generated

Which method is used to remove the last element of an array?

Pop()

Push()

Shift()

Unshift()

50% got this right

The pop() method removes the last element from an array and returns that element.
5
48 random squares
AI Generated

What does 'DOM' stand for in JavaScript?

Document Object Model

Data Object Model

Display Object Model

Dynamic Object Model

47% got this right

The DOM is a programming interface for HTML and XML documents, representing the structure of a document.
6
48 random squares
AI Generated

Order these JavaScript frameworks/libraries by release date, from oldest to newest.

1.

JQuery

2.

AngularJS

3.

React

4.

Vue.js

Easy  83% got this right

jQuery was released in 2006, AngularJS in 2010, React in 2013, and Vue.js in 2014.
7
48 random squares
AI Generated

Which of these is NOT a JavaScript loop?

Repeat

Do-while

For

While

57% got this right

JavaScript has three types of loops: for, while, and do-while. 'repeat' is not a JavaScript loop.
8
48 random squares
AI Generated

What is the purpose of the 'this' keyword in JavaScript?

Refer to the current object

Create a function

Declare a variable

Start a loop

64% got this right

In JavaScript, 'this' is a reference to the object that is executing the current function.