Math.E

The Math.E property represents the base of natural logarithms, e, approximately 2.718.

$$\mathtt{\mi{Math.E}} = e \approx 2.718$$

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

See also

• Math.exp()
• Math.log()
• Math.log1p()