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

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

A). array

B). object

C). number

D). list

What is the result of typeof undefined?

A). undefined

B). null

C). object

D). number

What is the output of '5' - 3?

A). 2

B). 2

C). 53

D). Error

Which symbol is used to denote a string template literal?

A). ''

B).

C). ``

D). {}

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

A). symbol

B). object

C). string

D). undefined

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

A). toString()

B). parseInt()

C). String()

D). Number()

What is the data type of true 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

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