The Math.cbrt()
function returns the cube root of a number, that is
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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).
Polyfill
For all , have so this can be emulated by the following function:
if (!Math.cbrt) { Math.cbrt = (function(pow) { return function cbrt(x){ // ensure negative numbers remain negative: return x < 0 ? -pow(-x, 1/3) : pow(x, 1/3); }; })(Math.pow); // localize Math.pow to increase efficiency }
Examples
Using Math.cbrt()
Math.cbrt(NaN); // NaN Math.cbrt(-1); // -1 Math.cbrt(-0); // -0 Math.cbrt(-Infinity); // -Infinity Math.cbrt(0); // 0 Math.cbrt(1); // 1 Math.cbrt(Infinity); // Infinity Math.cbrt(null); // 0 Math.cbrt(2); // 1.2599210498948732
Specifications
Specification |
---|
ECMAScript (ECMA-262) The definition of 'Math.cbrt' in that specification. |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data
and send us a pull request.
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
cbrt | Chrome Full support 38 | Edge Full support 12 | Firefox Full support 25 | IE No support No | Opera Full support 25 | Safari Full support 8 | WebView Android Full support 38 | Chrome Android Full support 38 | Firefox Android Full support 25 | Opera Android Full support 25 | Safari iOS Full support 8 | Samsung Internet Android Full support 3.0 | nodejs Full support 0.12 |
Legend
- Full support
- Full support
- No support
- No support