What will typeof NaN return?
A). number
B). NaN
C). undefined
D). object
Which method can be used to convert a string to a number in JavaScript?
A). parseInt()
B). toString()
C). toNumber()
D). parseStr()
What is the result of null === undefined?
A). 1
B). 0
C). Error
D). NaN
Which operator checks both value and type for equality in JavaScript?
A). ==
B). !=
C). ===
D). !==
Which function can convert a number to a string in JavaScript?
A). toString()
B). parseInt()
C). String()
D). Number()
What is the result of typeof Symbol('id')?
A). symbol
B). object
C). string
D). undefined
What is the data type of an array in JavaScript?
A). Array
B). Object
C). Collection
D). List
What is the data type of true in JavaScript?
A). String
B). Boolean
C). Number
D). Object
Which symbol is used to denote a string template literal?
A). ''
B).
C). ``
D). {}
What is the output of typeof function() {}?
A). function
B). object
C). undefined
D). number