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The Math.cbrt()
function returns the cube root of a number, that is
Syntax
Math.cbrt(x)
Parameters
x
- A number.
Return value
The cube root of the given number.
Description
Because cbrt()
is a static method of Math
, you always use it as Math.cbrt()
, rather than as a method of a Math
object you created (Math
is not a constructor).
Examples
Using Math.cbrt()
Math.cbrt(-1); // -1 Math.cbrt(0); // 0 Math.cbrt(1); // 1 Math.cbrt(2); // 1.2599210498948734
Polyfill
For all , have so this can be emulated by the following function:
Math.cbrt = Math.cbrt || function(x) { var y = Math.pow(Math.abs(x), 1/3); return x < 0 ? -y : y; };
Specifications
Specification | Status | Comment |
---|---|---|
ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'Math.cbrt' in that specification. |
Standard | Initial definition. |
ECMAScript 2017 Draft (ECMA-262) The definition of 'Math.cbrt' in that specification. |
Draft |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | 38 | 25 (25) | No support | 25 | 7.1 |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | No support | No support | 25.0 (25) | No support | No support | 8 |