Which method can convert a number to a different base (e.g., hexadecimal)?
A). toString()
B). parseInt()
C). toFixed()
D). valueOf()
What does parseFloat('12.34abc') return?
A). 12
B). 34
C). NaN
D). undefined
What does Number('123') return?
A). 123
B). 123
C). NaN
D). 23
What does the method parseInt('10.5') return?
A). 5
B). 11
C). 10
D). NaN
What does Number.isInteger(123.45) return?
A). 1
B). 0
C). NaN
D). undefined
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 isFinite(123) return?
A). 1
B). 0
C). NaN
D). undefined
Which method converts a string to a floating point number?
A). parseFloat()
B). toFixed()
C). toPrecision()
D). Number()
What does Number.isNaN('123') return?
A). 1
B). 0
C). NaN
D). undefined