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
What does the method parseInt('10.5') return?
A). 5
B). 11
C). 10
D). NaN
What does parseInt('101', 2) return?
A). 5
B). 101
C). NaN
D). 2
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 isFinite(123) return?
A). 1
B). 0
C). NaN
D). undefined
Which method returns the primitive value of a Number object?
A). toString()
B). valueOf()
C). toFixed()
D). parseFloat()
What is the result of parseInt('0xF', 16)?
A). 15
B). 0
C). NaN
D). 16
What does parseFloat('12.34abc') return?
A). 12
B). 34
C). NaN
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Which method converts a string to a floating point number?
A). parseFloat()
B). toFixed()
C). toPrecision()
D). Number()
What does Number('123abc') return?
A). 123
B). NaN
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Which method would you use to check if a value is a finite number?
A). isNaN()
B). isFinite()
C). Number()
D). toFixed()