What will typeof [1, 2, 3] return?

Which symbol is used to denote a string template literal?

A). ''

B).

C). ``

D). {}

What is the output of '5' - 3?

A). 2

B). 2

C). 53

D). Error

What is the result of typeof undefined?

A). undefined

B). null

C). object

D). number

What is the result of null === undefined?

A). 1

B). 0

C). Error

D). NaN

What is the output of typeof function() {}?

A). function

B). object

C). undefined

D). number

What is the data type of true in JavaScript?

A). String

B). Boolean

C). Number

D). Object

Which function can convert a number to a string in JavaScript?

A). toString()

B). parseInt()

C). String()

D). Number()

Which operator checks both value and type for equality in JavaScript?

A). ==

B). !=

C). ===

D). !==

How do you declare a variable with an undefined value?

A). let x;

B). let x = '';

C). let x = 0;

D). let x = null;

What is the output of typeof null?

A). null

B). undefined

C). object

D). number