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The Math.LOG2E property represents the base 2 logarithm of e, approximately 1.442:

Math.LOG2E=log2(e)1.442\mathtt{\mi{Math.LOG2E}} = \log_2(e) \approx 1.442

Property attributes of Math.LOG2E
Writable no
Enumerable no
Configurable no

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

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  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes Yes1 Yes Yes Yes
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes Yes Yes4 Yes Yes Yes

See also

Document Tags and Contributors

Last updated by: wbamberg,