Which data type represents an intentional absence of any value in JavaScript?

What is the result of 0 / 0 in JavaScript?

A). Infinity

B). 0

C). NaN

D). 1

Which operator checks if an object is an instance of a specific object type in JavaScript?

A). instanceof

B). typeof

C). isInstanceof

D). isTypeOf

What is the outcome of typeof undefined in JavaScript?

A). String

B). Undefined

C). Null

D). Number

Which data type represents a block of reusable code in JavaScript?

A). String

B). Object

C). Function

D). Number

What will let x = '10'; let y = x - 5; console.log(y); output in JavaScript?

A). '5'

B). 5

C). '10'

D). 10

Which data type represents unique and immutable values in JavaScript introduced in ES6?

A). Symbol

B). Object

C). Array

D). Function

What will be the result of typeof 'hello' in JavaScript?

A). String

B). Number

C). Undefined

D). Function

What is the data type of the value undefined in JavaScript?

A). Number

B). Boolean

C). String

D). Undefined

What will the following code snippet output: let a = 10; a += '5'; console.log(a); in JavaScript?

A). '105'

B). 105

C). 15

D). '15'

What does NaN represent in JavaScript?

A). Not a Number

B). Infinity

C). Positive Infinity

D). Negative Infinity