files/en-us/web/javascript/reference/global_objects/math/log2e/index.md

metadata

title: Math.LOG2E
short-title: LOG2E
slug: Web/JavaScript/Reference/Global_Objects/Math/LOG2E
page-type: javascript-static-data-property
browser-compat: javascript.builtins.Math.LOG2E
sidebar: jsref

The Math.LOG2E static data property represents the base 2 logarithm of e, approximately 1.443.

{{InteractiveExample("JavaScript Demo: Math.LOG2E", "shorter")}}

function getLog2e() {
  return Math.LOG2E;
}

console.log(getLog2e());
// Expected output: 1.4426950408889634

Value

$$\mathrm{𝙼𝚊𝚝𝚑.𝙻𝙾𝙶𝟸𝙴}={log}_2(\mathrm{e})\approx 1.443\backslash mathtt\{Math.LOG2E\}\; =\; \backslash log\_2(\backslash mathrm\{e\})\; \backslash approx\; 1.443$$

{{js_property_attributes(0, 0, 0)}}

Description

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).

Examples

Using Math.LOG2E

The following function returns the base 2 logarithm of e:

function getLog2e() {
  return Math.LOG2E;
}

getLog2e(); // 1.4426950408889634

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{jsxref("Math.exp()")}}
• {{jsxref("Math.log()")}}
• {{jsxref("Math.log2()")}}