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 [1, 2, 3] return?
A). array
B). object
C). number
D). list
What is the output of '5' + 3?
A). 8
B). 53
C). 8
D). Error
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 will typeof NaN return?
A). number
B). NaN
C). undefined
D). object
What is the result of null === undefined?
A). 1
B). 0
C). Error
D). NaN
What is the result of typeof undefined?
A). undefined
B). null
C). object
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 typeof function() {}?
A). function
B). object
C). undefined
D). number