JavaScript Fundamentals

Question 1

What will 'Hello' + ' ' + 'World' evaluate to?

Accepted Answer

Hello World

Question 2

Which of the following is NOT a valid JavaScript data type?

Accepted Answer

Character

Question 3

The result of '5' + 3 in JavaScript is 8.

Accepted Answer

False

Question 4

What will Math.floor(4.9) return?

Accepted Answer

4

Question 5

Which operators can be used for conditional logic in JavaScript?

Accepted Answer

===, &&, ||

Question 6

The Math.random() method returns a number between 0 (inclusive) and 1 (exclusive).

Accepted Answer

False

Question 7

What does the === operator check?

Accepted Answer

both value and type

Question 8

Which of the following is used for string concatenation?

Accepted Answer

+

Question 9

In JavaScript, variables declared with const can be reassigned.

Accepted Answer

False

Question 10

What does the typeof operator do in JavaScript?

Accepted Answer

Returns the variable type

Questions 10