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

Which data type represents positive infinity in JavaScript?

A). Infinity

B). Number

C). NaN

D). Null

What is the outcome of typeof [1, 2, 3] in JavaScript?

A). String

B). Number

C). Array

D). Object

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

A). String

B). Object

C). Function

D). Number

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

A). Number

B). String

C). Boolean

D). Undefined

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

A). Symbol

B). Object

C). Array

D). Function

What is the data type of the value 'null' (with quotes) in JavaScript?

A). String

B). Number

C). Null

D). Undefined

Which of the following is a primitive data type in JavaScript?

A). Object

B). Array

C). Function

D). Boolean

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

A). '5'

B). 5

C). '10'

D). 10

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

A). Number

B). Boolean

C). String

D). Undefined

What does NaN represent in JavaScript?

A). Not a Number

B). Infinity

C). Positive Infinity

D). Negative Infinity