//Here is a list of built-in number methods in JavaScript.
Method Description
isNaN() determines whether the passed value is NaN
isFinite() determines whether the passed value is a finite number
isInteger() determines whether the passed value is an integer
isSafeInteger() determines whether the passed value is a safe integer
parseFloat(string) converts the numeric floating string to floating-point number
parseInt(string, [radix]) converts the numeric string to integer
toExponential(fractionDigits) returns a string value for a number in exponential notation
toFixed(digits) returns a string value for a number in fixed-point notation
toPrecision() returns a string value for a number to a specified precision
toString([radix]) returns a string value in a specified radix(base)
valueof() returns the numbers value
toLocaleString() returns a string with a language sensitive representation of a number