Q
What does isFinite(123) return?

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.
Related Questions on Average

What does parseFloat('12.34abc') return?

A). 12

B). 34

C). NaN

D). undefined

What is the output of (255).toString(2)?

A). 255

B). 11111111

C). ff

D). 10

What does the method parseInt('10.5') return?

A). 5

B). 11

C). 10

D). NaN

Which method converts a string to a floating point number?

A). parseFloat()

B). toFixed()

C). toPrecision()

D). Number()

What does parseInt('101', 2) return?

A). 5

B). 101

C). NaN

D). 2

What is the result of isNaN('Hello')?

A). 1

B). 0

C). NaN

D). undefined

What does Number.isNaN('123') return?

A). 1

B). 0

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 is the result of parseInt('0xF', 16)?

A). 15

B). 0

C). NaN

D). 16

Which method returns a number in exponential notation?

A). toFixed()

B). toExponential()

C). toPrecision()

D). toString()