Which of the following is not a primitive data type in JavaScript?

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

A). function

B). object

C). undefined

D). number

What will typeof NaN return?

A). number

B). NaN

C). undefined

D). object

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 result of typeof Symbol('id')?

A). symbol

B). object

C). string

D). undefined

Which of the following is a falsy value in JavaScript?

A). 0

B).

C). null

D). All of the above

What is the output of typeof null?

A). null

B). undefined

C). object

D). number

What is the output of '5' + 3?

A). 8

B). 53

C). 8

D). Error

Which method can be used to convert a string to a number in JavaScript?

A). parseInt()

B). toString()

C). toNumber()

D). parseStr()

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

A). array

B). object

C). number

D). list

What is the data type of true in JavaScript?

A). String

B). Boolean

C). Number

D). Object