The Math.exp()
function returns e^{x}, where x is the argument, and e is Euler's number (also known as Napier's constant), the base of the natural logarithms.
The Math.exp()
function returns e^{x}, where x is the argument, and e is Euler's number (also known as Napier's constant), the base of the natural logarithms.
Math.exp(x)
x
A number.
A number representing e^{x}, where e is Euler's number and x is the argument.
Because exp()
is a static method of Math
, you always use it as Math.exp()
, rather than as a method of a Math
object you created (Math
is not a constructor).
Beware that e
to the power of a number very close to 0 will be very close to 1 and suffer from loss of precision. In this case, you may want to use Math.expm1
instead, and obtain a much higher-precision fractional part of the answer.
Math.exp(-1); // 0.36787944117144233 Math.exp(0); // 1 Math.exp(1); // 2.718281828459045
Specification |
---|
ECMAScript Language Specification # sec-math.exp |
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 | |
exp |
1 |
12 |
1 |
3 |
3 |
1 |
4.4 |
18 |
4 |
10.1 |
1 |
1.0 |
1.0 |
0.10.0 |
© 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/exp