How to Use the Number Object

This article describes Number, a primitive wrapper object used to represent and manipulate numbers. "Number" represents floating point numbers like 45 or -3.24. Numbers are encoded as 64-bit binary, much like double in Java. There are some helpful functions in "Number" like Number ("123") would return the actual number 123. However, a "Number" ("Iamnotanumber") would return NaN (Not-a-Number) because it could not convert that into a number.

Static methods

Number.isFinite(): Determine whether the passed value is a finite number.
Number.isInteger(): Determine whether the passed value is an integer.
Number.isNaN(): Determine whether the passed value is NaN.
Number.isSafeInteger(): Determine whether the passed value is a safe integer (number between -(2⁵³ - 1) and 2⁵³ - 1).
Number.parseFloat(): This is the same as the global parseFloat() function.
Number.parseInt(): This is the same as the global parseInt() function.