JavaScript Math.log2()

let a = Math.log2(2.7183);
let b = Math.log2(2);
let c = Math.log2(1);
let d = Math.log2(0);
let e = Math.log2(-1);

Description

The Mat.log2() method returns the base-2 logarithm of a number.

Math.log2( x)

Parameter	Description
x	Required. A number.

Type	Description
Number	The base-2 logarithm of the number. `NaN` if the number is less than -1. `-Infinity` if the number is -1.

Math.log2() 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.log2() is not supported in Internet Explorer 11 (or earlier).