What is the result of null === undefined?

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

A). array

B). object

C). number

D). list

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). !==

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

A). String

B). Number

C). Object

D). Boolean

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 null == undefined?

A). 1

B). 0

C). Error

D). NaN

What is the data type of an array in JavaScript?

A). Array

B). Object

C). Collection

D). List

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 '5' - 3?

A). 2

B). 2

C). 53

D). Error

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

A). toString()

B). parseInt()

C). String()

D). Number()