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The Math.E property represents the base of natural logarithms, e, approximately 2.718.
Property attributes of Math.E |
|
|---|---|
| Writable | no |
| Enumerable | no |
| Configurable | no |
Description
Because E is a static property of Math, you always use it as Math.E, rather than as a property of a Math object you created (Math is not a constructor).
Examples
Using Math.E
The following function returns e:
function getNapier() {
return Math.E;
}
getNapier(); // 2.718281828459045
Specifications
| 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.E' in that specification. |
Standard | |
| ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'Math.E' in that specification. |
Standard | |
| ECMAScript 2017 Draft (ECMA-262) The definition of 'Math.E' in that specification. |
Draft |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |