Math.E

The Math.E property represents Euler's number, the base of natural logarithms, e, which is approximately 2.718.

Math.E = e 2.718 \mathtt{\mi{Math.E}} = e \approx 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
ECMAScript Language Specification (ECMAScript)
# sec-math.e

Browser compatibility

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See also