Which method would you use to check if a value is a finite number?
A). isNaN()
B). isFinite()
C). Number()
D). toFixed()
What does the method parseInt('10.5') return?
A). 5
B). 11
C). 10
D). NaN
Which method converts a string to a floating point number?
A). parseFloat()
B). toFixed()
C). toPrecision()
D). Number()
What does isFinite(123) return?
A). 1
B). 0
C). NaN
D). undefined
What does toPrecision(3) do?
A). Formats a number to 3 decimal places
B). Returns a number in exponential notation
C). Returns a string with a number written with a specified length
D). Converts a number to a string
What is the output of (255).toString(2)?
A). 255
B). 11111111
C). ff
D). 10
What does (123.456).toFixed(1) return?
A). 4
B). 5
C). 45
D). 123
How do you format a number to two decimal places?
A). toFixed(2)
B). toExponential(2)
C). toPrecision(2)
D). toString(2)
What does parseFloat('12.34abc') return?
A). 12
B). 34
C). NaN
D). undefined
What does Number('123abc') return?
A). 123
B). NaN
C). 123abc
D). undefined