What is the data type of 42 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
What is the data type of true in JavaScript?
A). String
B). Boolean
C). Number
D). Object
Which of the following is not a primitive data type in JavaScript?
A). String
B). Number
C). Object
D). Boolean
What will typeof [1, 2, 3] return?
A). array
B). object
C). number
D). list
Which function can convert a number to a string in JavaScript?
A). toString()
B). parseInt()
C). String()
D). Number()
Which method can be used to convert a string to a number in JavaScript?
A). parseInt()
B). toString()
C). toNumber()
D). parseStr()
What will typeof NaN return?
A). number
B). NaN
C). undefined
D). object
What is the result of typeof undefined?
A). undefined
B). null
C). object
D). number
What is the data type of an array in JavaScript?
A). Array
B). Object
C). Collection
D). List