JavaScript Quiz

by | Nov 19, 2022 | Assessment, Interview

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Welcome to our JavaScript Quiz! JavaScript is a popular programming language that is widely used for both front-end and back-end web development. Whether you’re a seasoned JavaScript developer or just starting out, this quiz will challenge your knowledge of JavaScript concepts, features, and best practices. With a mix of multiple choice and scenario-based questions, you’ll be tested on topics like variables, functions, objects, arrays, and more. So, let’s get started and see how well you know JavaScript!

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JavaScript Quiz

Test your knowledge of JavaScript concepts, features, and best practices with our interactive quiz!

1 / 30

Which method converts the array to string?

2 / 30

__________ is an event in which the user pushes a keyword key.

3 / 30

What will be the output of the code below?


4 / 30

Js objects are written on

5 / 30

What is the syntax of function in JS?

6 / 30

Javascript typed array can be used to access ______.

7 / 30

Which generation introduced the const keyword?

8 / 30

For deleting array elements, we should use

9 / 30

Which of the following is the syntax of the let keyword?

10 / 30

The ________ method adds new items to an array.

11 / 30

Javascript is also known as

12 / 30

What will be the output of the code below?


13 / 30

Which is used for debugging

14 / 30

What will be the output of the code below?


15 / 30

In how many ways can we print output in JS?

16 / 30

Which of the following will print output of 7?

17 / 30

_________ is used to declare variable with block scope & ______ used for global scope.

18 / 30

Which of the following code will provide output 12?

19 / 30

Which of these is not a JS keyword?

20 / 30

What will be the output of the code below?


21 / 30

The programming instruction in JS is called _________.

22 / 30

Which of the following code will provide output 110?

23 / 30

Can a single error in code stop the whole website rendering?

24 / 30

What will be the output of the code below?


25 / 30

What is the main feature of JS?

26 / 30

What will be the output of the code below?


27 / 30

JS is case sensitive

28 / 30

Internal Js means

29 / 30

What will be the output of the code below?

JS example


30 / 30

Javascript can be used for

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