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
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 does Number('123') return?
A). 123
B). 123
C). NaN
D). 23
What is the output of (255).toString(2)?
A). 255
B). 11111111
C). ff
D). 10
Which method converts a number to a string?
A). toFixed()
B). toString()
C). valueOf()
D). parseFloat()
Which method returns a number in exponential notation?
A). toFixed()
B). toExponential()
C). toPrecision()
D). toString()
What does parseInt('101', 2) return?
A). 5
B). 101
C). NaN
D). 2
What does Number('123abc') return?
A). 123
B). NaN
C). 123abc
D). undefined
What does Number.isInteger(123.45) return?
A). 1
B). 0
C). NaN
D). undefined
What is the result of parseInt('0xF', 16)?
A). 15
B). 0
C). NaN
D). 16
What is the result of isNaN('Hello')?
A). 1
B). 0
C). NaN
D). undefined