Q
What does the !! operator do to a value?

Answer & Solution

Answer: Option B
Solution:
The !! operator converts any value to its boolean equivalent by first negating it and then negating the result.
Related Questions on Average

What does typeof NaN return?

A). number

B). NaN

C). undefined

D). object

What is the result of the expression 5 + '5'?

A). 10

B). 55

C). 55

D). NaN

Which operator checks if two values are not equal and also checks for type?

A). !=

B). !==

C). <

D). >

What is the value of the expression null == undefined?

A). 1

B). 0

C). null

D). undefined

Which operator is used to assign a value to a variable in JavaScript?

A). =

B). ==

C). ===

D). =>

What is the result of 10 % 3 in JavaScript?

A). 0

B). 1

C). 2

D). 3

What does the typeof operator return for a function?

A). function

B). object

C). undefined

D). method

What is the result of true + false?

A). 0

B). 1

C). truefalse

D). NaN

Which of the following is not a comparison operator?

A). ==

B). >

C). <=

D). =

What is the result of the expression 3 * '3'?

A). 9

B). 9

C). 33

D). NaN