number.md

Number

A number is a double-precision 64-bit IEEE 754 floating-point number (i.e. a number between -(2⁵³ - 1) and 2⁵³ - 1).

Operators

Expression	Description
-x	Negation
~x	Bitwise NOT
x1 * x2	Multiplication
x1 / x2	Division
x1 % x2	Remainder
x1 ** x2	Exponentiation
x1 << x2	Left shift
x1 >> x2	Sign-propagating right shift
x1 >>> x2	Zero-fill right shift
x1 & x2	Bitwise AND
x1 + x2	Addition
x1 - x2	Subtraction
x1 | x2	Bitwise OR
x1 ^ x2	Bitwise XOR
x1 == x2	Equality
x1 != x2	Inequality
x1 < x2	Less than
x1 <= x2	Less than or equal
x1 > x2	Greater than
x1 >= x2	Greater than or equal

x.IsFinite()

Determines whether x is a finite number.

x.IsInteger()

Determines whether x is an integer.

x.IsNaN()

Determines whether x is NaN.

x.IsSafeInteger()

Determines whether x is a number that is a safe integer.

x.ToExponential([fractionDigits])

Returns a string representing x in exponential notation. fractionDigits is the number of digits after the decimal point. If the argument is omitted, defaults to as many digits as necessary to specify x.

x.ToFixed([digits])

Formats x using fixed-point notation. digits is the number of digits to appear after the decimal point (between 0 and 20 inclusively). If the argument is omitted, defaults to 0.

x.ToPrecision([precision])

Returns a string representing x. precision is the number of significant digits. If the argument is omitted, behaves as toString().

x.ToBoolean()

Returns false if x is 0 or NaN. Returns true otherwise.

x.ToString([radix])

Returns a string representing x. radix is an integer between 2 and 36 specifying the base to use. If the argument is omitted, defaults to 10.

x.ToNumber()

Returns x.

x.Type()

Returns "number".