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

What will typeof NaN return?

A). number

B). NaN

C). undefined

D). object

What is the result of typeof undefined?

A). undefined

B). null

C). object

D). number

Which symbol is used to denote a string template literal?

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 '5' - 3?

A). 2

B). 2

C). 53

D). Error

What is the result of typeof Symbol('id')?

A). symbol

B). object

C). string

D). undefined

What is the result of null === undefined?

A). 1

B). 0

C). Error

D). NaN

What is the data type of 42 in JavaScript?

A). String

B). Boolean

C). Number

D). Object

What is the output of typeof null?

A). null

B). undefined

C). object

D). number

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

A). toString()

B). parseInt()

C). String()

D). Number()