What is the result of typeof undefined?

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

A). String

B). Number

C). Object

D). Boolean

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

A). toString()

B). parseInt()

C). String()

D). Number()

What will typeof NaN return?

A). number

B). NaN

C). undefined

D). object

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

A). ==

B). !=

C). ===

D). !==

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

A). function

B). object

C). undefined

D). number

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

A). parseInt()

B). toString()

C). toNumber()

D). parseStr()

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 data type of an array in JavaScript?

A). Array

B). Object

C). Collection

D). List

What is the output of typeof null?

A). null

B). undefined

C). object

D). number

Which of the following is a falsy value in JavaScript?

A). 0

B).

C). null

D). All of the above