Answer & Solution
Answer: Option A
Solution:
The isFinite() function checks if a value is a finite number. isFinite(123) returns true because 123 is a finite number.
Q
What does isFinite(123) return?
Related Questions on Average
Which method can convert a number to a different base (e.g., hexadecimal)?
A). toString()
B). parseInt()
C). toFixed()
D). valueOf()
Which method returns the primitive value of a Number object?
A). toString()
B). valueOf()
C). toFixed()
D). parseFloat()
Which method returns a number in exponential notation?
A). toFixed()
B). toExponential()
C). toPrecision()
D). toString()
What is the output of (255).toString(2)?
A). 255
B). 11111111
C). ff
D). 10
Which method converts a string to a floating point number?
A). parseFloat()
B). toFixed()
C). toPrecision()
D). Number()
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 Number.isInteger(123.45) return?
A). 1
B). 0
C). NaN
D). undefined
What does Number('123abc') return?
A). 123
B). NaN
C). 123abc
D). undefined
What is the result of parseInt('0xF', 16)?
A). 15
B). 0
C). NaN
D). 16