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 operator would you use to determine the remainder of a division in JavaScript?
A). /
B). %
C). //
D). \
What is the result of true + false?
A). 0
B). 1
C). truefalse
D). NaN
What is the result of the expression 5 + '5'?
A). 10
B). 55
C). 55
D). NaN
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
Which operator checks if two values are not equal and also checks for type?
A). !=
B). !==
C). <
D). >
What does typeof NaN return?
A). number
B). NaN
C). undefined
D). object
What is the result of 10 % 3 in JavaScript?
A). 0
B). 1
C). 2
D). 3
What is the result of 5 === '5'?
A). 1
B). 0
C). 1
D). 0
What is the value of the expression null == undefined?
A). 1
B). 0
C). null
D). undefined