The Math.LOG2E property represents the base 2 logarithm of e, approximately 1.442:
Property attributes of Math.LOG2E
| |
|---|---|
| Writable | no |
| Enumerable | no |
| Configurable | no |
Because LOG2E is a static property of Math, you always use it as Math.LOG2E, rather than as a property of a Math object you created (Math is not a constructor).
Math.LOG2E
The following function returns the base 2 logarithm of e:
function getLog2e() {
return Math.LOG2E;
}
getLog2e(); // 1.4426950408889634
| Specification | Status | Comment |
|---|---|---|
| ECMAScript 1st Edition (ECMA-262) | Standard | Initial definition. Implemented in JavaScript 1.0. |
| ECMAScript 5.1 (ECMA-262) The definition of 'Math.LOG2E' in that specification. | Standard | |
| ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'Math.LOG2E' in that specification. | Standard | |
| ECMAScript Latest Draft (ECMA-262) The definition of 'Math.LOG2E' in that specification. | Draft |
| Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | Yes | Yes | 1 | Yes | Yes | Yes |
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | Yes | Yes | Yes | 4 | Yes | Yes | Yes |
| Server | |
|---|---|
| Node.js | |
| Basic support | Yes |
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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/LOG2E