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Showing content from http://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/LOG2E below:

Math.LOG2E - JavaScript | MDN

Math.LOG2E

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

Try it
function getLog2e() {
  return Math.LOG2E;
}

console.log(getLog2e());
// Expected output: 1.4426950408889634
Value 𝙼𝚊𝚝𝚑.𝙻𝙾𝙶𝟸𝙴 = log 2 ( e ) ≈ 1.443 \mathtt{Math.LOG2E} = \log_2(\mathrm{e}) \approx 1.443 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 Browser compatibility See also

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