What is the data type of 42 in JavaScript?
A). String
B). Boolean
C). Number
D). Object
What will typeof [1, 2, 3] return?
A). array
B). object
C). number
D). list
What is the result of null === undefined?
A). 1
B). 0
C). Error
D). NaN
What is the output of typeof null?
A). null
B). undefined
C). object
D). number
What is the data type of an array in JavaScript?
A). Array
B). Object
C). Collection
D). List
Which operator checks both value and type for equality in JavaScript?
A). ==
B). !=
C). ===
D). !==
What is the output of typeof function() {}?
A). function
B). object
C). undefined
D). number
Which of the following is not a primitive data type in JavaScript?
A). String
B). Number
C). Object
D). Boolean
What is the output of '5' + 3?
A). 8
B). 53
C). 8
D). Error
What is the output of '5' - 3?
A). 2
B). 2
C). 53
D). Error