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 converts a number to a string?
A). toFixed()
B). toString()
C). valueOf()
D). parseFloat()
Which method can convert a number to a different base (e.g., hexadecimal)?
A). toString()
B). parseInt()
C). toFixed()
D). valueOf()
What does (123.456).toFixed(1) return?
A). 4
B). 5
C). 45
D). 123
Which method returns the primitive value of a Number object?
A). toString()
B). valueOf()
C). toFixed()
D). parseFloat()
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 parseFloat('12.34abc') return?
A). 12
B). 34
C). NaN
D). undefined
How do you format a number to two decimal places?
A). toFixed(2)
B). toExponential(2)
C). toPrecision(2)
D). toString(2)
What does Number('123') return?
A). 123
B). 123
C). NaN
D). 23
What is the result of isNaN('Hello')?
A). 1
B). 0
C). NaN
D). undefined