What does (123.456).toFixed(1) return?
A). 4
B). 5
C). 45
D). 123
Which method can convert a number to a different base (e.g., hexadecimal)?
A). toString()
B). parseInt()
C). toFixed()
D). valueOf()
What does the method parseInt('10.5') return?
A). 5
B). 11
C). 10
D). NaN
What is the result of parseInt('0xF', 16)?
A). 15
B). 0
C). NaN
D). 16
What does Number.isNaN('123') 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 isFinite(123) return?
A). 1
B). 0
C). NaN
D). undefined
What is the result of isNaN('Hello')?
A). 1
B). 0
C). NaN
D). undefined
What does parseInt('101', 2) return?
A). 5
B). 101
C). NaN
D). 2
What does parseFloat('12.34abc') return?
A). 12
B). 34
C). NaN
D). undefined