JavaScript Math.log1p()

let a = Math.log1p(2.7183);
let b = Math.log1p(2);
let c = Math.log1p(1);
let d = Math.log1p(0);
let e = Math.log1p(-1);

Description

The Math.log1p() method returns the natural logarithm (base E) of 1 + a number.

Math.log1p( x)

Parameter	Description
x	Required. A number.

Type	Description
Number	The natural logarithm (base E) of 1 + the number. `NaN` if the number is less than -1. `-Infinity` if the number is -1.

Math.log1p() 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.log1p() is not supported in Internet Explorer 11 (or earlier).