Question

How to use the function Math.log2() to get the base 2 logarithm of a number in JavaScript

Answer 1

document.write("Math.log2(0) = " + Math.log2(0) + "<br />");
document.write("Math.log2(1) = " + Math.log2(1) + "<br />");
document.write("Math.log2(-1) = " + Math.log2(-1) + "<br />");
document.write("Math.log2(2) = " + Math.log2(2) + "<br />");
document.write("Math.log2(-2) = " + Math.log2(-2) + "<br />");
document.write("Math.log2(5) = " + Math.log2(5) + "<br />");
document.write("Math.log2(10) = " + Math.log2(10) + "<br />");
document.write("Math.log2(100) = " + Math.log2(100) + "<br />");
document.write("Math.log2(100000) = " + Math.log2(100000) + "<br />");
document.write("Math.log2(125) = " + Math.log2(125) + "<br />");
document.write("Math.log2(3) = " + Math.log2(3) + "<br />");
document.write("Math.log2(1024) = " + Math.log2(1024) + "<br />");

 
/*
run

Math.log2(0) = -Infinity
Math.log2(1) = 0
Math.log2(-1) = NaN
Math.log2(2) = 1
Math.log2(-2) = NaN
Math.log2(5) = 2.321928094887362
Math.log2(10) = 3.3219280948873626
Math.log2(100) = 6.643856189774725
Math.log2(100000) = 16.609640474436812
Math.log2(125) = 6.965784284662088
Math.log2(3) = 1.5849625007211563
Math.log2(1024) = 10
 
*/

 

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