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

Answer & Solution

Answer: Option A
Solution:
The parseInt() function parses a string argument and returns an integer of the specified radix. parseInt('101', 2) returns 5 because '101' is 5 in binary.
Related Questions on Average

What does isFinite(123) return?

A). 1

B). 0

C). NaN

D). undefined

What does (123.456).toFixed(1) return?

A). 4

B). 5

C). 45

D). 123

What does Number.isInteger(123.45) 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()

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 isNaN('Hello')?

A). 1

B). 0

C). NaN

D). undefined

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

A). 1

B). 0

C). NaN

D). undefined

Which method converts a string to a floating point number?

A). parseFloat()

B). toFixed()

C). toPrecision()

D). Number()

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

A). 15

B). 0

C). NaN

D). 16

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

A). 255

B). 11111111

C). ff

D). 10