What does isFinite(123) return?
A). 1
B). 0
C). NaN
D). undefined
What does parseFloat('12.34abc') return?
A). 12
B). 34
C). NaN
D). undefined
What is the output of (255).toString(2)?
A). 255
B). 11111111
C). ff
D). 10
Which method returns the primitive value of a Number object?
A). toString()
B). valueOf()
C). toFixed()
D). parseFloat()
What does (123.456).toFixed(1) return?
A). 4
B). 5
C). 45
D). 123
What is the result of parseInt('0xF', 16)?
A). 15
B). 0
C). NaN
D). 16
Which method converts a number to a string?
A). toFixed()
B). toString()
C). valueOf()
D). parseFloat()
Which method would you use to check if a value is a finite number?
A). isNaN()
B). isFinite()
C). Number()
D). toFixed()
What does parseInt('101', 2) return?
A). 5
B). 101
C). NaN
D). 2
What does the method parseInt('10.5') return?
A). 5
B). 11
C). 10
D). NaN