JavaScript Math.expm1()
Definition and Usage
The expm1() method returns the value of Ex minus 1, where E is Euler's number (approximately 2.7183) and x is the number passed to it.
This method is more accurate than using Math.exp() and subtracting 1.
More Examples
let a = Math.exp(1);
let b = Math.exp(-1);
let c = Math.exp(5);
let d = Math.exp(10);
Try it Yourself »
Browser Support
Math.expm1()
is an ECMAScript6 (ES6) feature.
ES6 (JavaScript 2015) is supported in all modern browsers:
Chrome | Edge | Firefox | Safari | Opera |
Yes | Yes | Yes | Yes | Yes |
Math.expm1()
is not supported in Internet Explorer 11 (or earlier).
Syntax
Math.expm1(x)
Parameters
Parameter | Description |
---|---|
x | Required. A number |
Return Value
A number representing Ex minus 1 |