Which operator is used for string concatenation in JavaScript?
A). -
B). *
C). +
D). /
What is the result of true + false?
A). 0
B). 1
C). truefalse
D). NaN
What does the typeof operator return for an array?
A). object
B). array
C). list
D). collection
What does typeof NaN return?
A). number
B). NaN
C). undefined
D). object
Which of the following is not a comparison operator?
A). ==
B). >
C). <=
D). =
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 the expression 3 * '3'?
A). 9
B). 9
C). 33
D). NaN
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
Which of the following operators can be used to compare two values, including type comparison?
A). ==
B). =
C). ===
D). !==