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    LOG2E

    Summary

    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 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

    Example: 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. Implemented in JavaScript 1.0 Standard Initial definition.
    ECMAScript Language Specification 5.1th Edition (ECMA-262) Standard  
    ECMAScript Language Specification 6th Edition (ECMA-262) 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)

    See also

    • The Math object it belongs to.

    Document Tags and Contributors

    Contributors to this page: Sevenspade
    Last updated by: Sevenspade,