The Math.pow() static method, given two arguments, base and exponent, returns baseexponent.
Math.pow()
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Syntax
Math.pow(base, exponent)
Parameters
-
base -
The base number.
-
exponent -
The exponent used to raise the
base.
Return value
A number representing the given base taken to the power of the given exponent.
Description
The Math.pow() function returns the base to the exponent power, as in base^exponent, the base and the exponent are in decimal numeral system.
Because pow() is a static method of Math, use it as Math.pow(), rather than as a method of a Math object you created. (Math has no constructor.) If the base is negative and the exponent is not an integer, the result is NaN.
Examples
Using Math.pow()
// simple Math.pow(7, 2); // 49 Math.pow(7, 3); // 343 Math.pow(2, 10); // 1024 // fractional exponents Math.pow(4, 0.5); // 2 (square root of 4) Math.pow(8, 1/3); // 2 (cube root of 8) Math.pow(2, 0.5); // 1.4142135623730951 (square root of 2) Math.pow(2, 1/3); // 1.2599210498948732 (cube root of 2) // signed exponents Math.pow(7, -2); // 0.02040816326530612 (1/49) Math.pow(8, -1/3); // 0.5 // signed bases Math.pow(-7, 2); // 49 (squares are positive) Math.pow(-7, 3); // -343 (cubes can be negative) Math.pow(-7, 0.5); // NaN (negative numbers don't have a real square root) // due to "even" and "odd" roots laying close to each other, // and limits in the floating number precision, // negative bases with fractional exponents always return NaN Math.pow(-7, 1/3); // NaN
Specifications
| Specification |
|---|
| ECMAScript Language Specification # sec-math.pow |
Browser compatibility
| Desktop | Mobile | Server | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | Deno | Node.js | |
pow |
1
|
12
|
1
|
3
|
3
|
1
|
1
|
18
|
4
|
10.1
|
1
|
1.0
|
1.0
|
0.10.0
|
See also
© 2005–2022 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/pow
