Answer & Solution
Answer: Option B
Solution:
The Number.isInteger() method determines whether the passed value is an integer. Number.isInteger(123.45) returns false because 123.45 is not an integer.
Q
What does Number.isInteger(123.45) return?
Related Questions on Average
Which method converts a string to a floating point number?
A). parseFloat()
B). toFixed()
C). toPrecision()
D). Number()
What does Number.isNaN('123') return?
A). 1
B). 0
C). NaN
D). undefined
Which method converts a number to a string?
A). toFixed()
B). toString()
C). valueOf()
D). parseFloat()
Which method would you use to check if a value is a finite number?
A). isNaN()
B). isFinite()
C). Number()
D). toFixed()
Which method can convert a number to a different base (e.g., hexadecimal)?
A). toString()
B). parseInt()
C). toFixed()
D). valueOf()
What is the output of (255).toString(2)?
A). 255
B). 11111111
C). ff
D). 10
What does isFinite(123) 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 does (123.456).toFixed(1) return?
A). 4
B). 5
C). 45
D). 123
What is the result of isNaN('Hello')?
A). 1
B). 0
C). NaN
D). undefined