Answer & Solution
Answer: Option C
Solution:
The toPrecision() method formats a number to a specified length, so toPrecision(3) returns a string with the number written with three significant digits.
Q
What does toPrecision(3) do?
Related Questions on Average
Which method can convert a number to a different base (e.g., hexadecimal)?
A). toString()
B). parseInt()
C). toFixed()
D). valueOf()
What does isFinite(123) return?
A). 1
B). 0
C). NaN
D). undefined
What does Number('123abc') return?
A). 123
B). NaN
C). 123abc
D). undefined
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 Number.isInteger(123.45) return?
A). 1
B). 0
C). NaN
D). undefined
What is the result of isNaN('Hello')?
A). 1
B). 0
C). NaN
D). undefined
Which method would you use to check if a value is a finite number?
A). isNaN()
B). isFinite()
C). Number()
D). toFixed()
What does Number.isNaN('123') return?
A). 1
B). 0
C). NaN
D). undefined
Which method returns a number in exponential notation?
A). toFixed()
B). toExponential()
C). toPrecision()
D). toString()