Answer & Solution
Answer: Option A
Solution:
In JavaScript, NaN is considered a number type, so typeof NaN returns 'number'.
Q
What does typeof NaN return?
Related Questions on Average
What does the + operator do when used with two numbers?
A). Concatenates them as strings
B). Adds them
C). Multiplies them
D). Subtracts them
Which of the following is a logical operator in JavaScript?
A). &&
B). ||
C). !
D). All of the above
What is the result of the expression 5 + '5'?
A). 10
B). 55
C). 55
D). NaN
Which of the following is not a comparison operator?
A). ==
B). >
C). <=
D). =
What is the result of 10 % 3 in JavaScript?
A). 0
B). 1
C). 2
D). 3
What is the result of true + false?
A). 0
B). 1
C). truefalse
D). NaN
What is the value of the expression null == undefined?
A). 1
B). 0
C). null
D). undefined
What does the !! operator do to a value?
A). Negates the value
B). Converts the value to its boolean equivalent
C). Increments the value by 2
D). No effect
What is the result of 5 === '5'?
A). 1
B). 0
C). 1
D). 0
What does the typeof operator return for an array?
A). object
B). array
C). list
D). collection