What is the output of typeof null?
A). null
B). undefined
C). object
D). number
What is the result of typeof Symbol('id')?
A). symbol
B). object
C). string
D). undefined
Which function can convert a number to a string in JavaScript?
A). toString()
B). parseInt()
C). String()
D). Number()
What is the data type of true in JavaScript?
A). String
B). Boolean
C). Number
D). Object
What is the output of '5' + 3?
A). 8
B). 53
C). 8
D). Error
What is the result of null === undefined?
A). 1
B). 0
C). Error
D). NaN
What will typeof [1, 2, 3] return?
A). array
B). object
C). number
D). list
Which operator checks both value and type for equality in JavaScript?
A). ==
B). !=
C). ===
D). !==
What is the data type of an array in JavaScript?
A). Array
B). Object
C). Collection
D). List
What will typeof NaN return?
A). number
B). NaN
C). undefined
D). object