Math
is a built-in object that has properties and methods for mathematical constants and functions. Not a function object.
Unlike the other global objects, Math
is not a constructor. All properties and methods of Math
are static. You refer to the constant pi as Math.PI
and you call the sine function as Math.sin(x)
, where x
is the method's argument. Constants are defined with the full precision of real numbers in JavaScript.
Math.E
Math.LN2
Math.LN10
Math.LOG2E
Math.LOG10E
Math.PI
Math.SQRT1_2
Math.SQRT2
Note that the trigonometric functions (sin()
, cos()
, tan()
, asin()
, acos()
, atan()
, atan2()
) expect or return angles in radians. To convert radians to degrees, divide by (Math.PI / 180)
, and multiply by this to convert the other way.
Note a lot of the math functions have a precision that's implementation-dependent. This means that different browsers can give a different result, and even the same JS engine on a different OS or architecture can give different results.
Math.abs(x)
Math.acos(x)
Math.asin(x)
Math.atan(x)
Math.atan2(y, x)
Math.ceil(x)
Math.cos(x)
Math.exp(x)
Math.floor(x)
Math.log(x)
Math.max([x[, y[, …]]])
Math.min([x[, y[, …]]])
Math.pow(x, y)
baseexponent
.Math.random()
Math.round(x)
Math.sin(x)
Math.sqrt(x)
Math.tan(x)
Math.toSource()
"Math"
.Created by Mozilla Contributors, license: CC-BY-SA 2.5