Answer & Solution
Answer: Option B
Solution:
The Number() function converts a string to a number, so Number('123') returns 123.
Q
What does Number('123') return?
Related Questions on Average
Which method would you use to check if a value is a finite number?
A). isNaN()
B). isFinite()
C). Number()
D). toFixed()
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 does parseFloat('12.34abc') return?
A). 12
B). 34
C). NaN
D). undefined
Which method can convert a number to a different base (e.g., hexadecimal)?
A). toString()
B). parseInt()
C). toFixed()
D). valueOf()
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
Which method returns a number in exponential notation?
A). toFixed()
B). toExponential()
C). toPrecision()
D). toString()
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