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