math-logn

Calculates the n-base logarithm of a number.

JavaScript provides methods to calculate the natural, base-2 and base-10 logarithm, i.e., Math.log(), Math.log2() and Math.log10() respectively.
... and that's it! With this method you can calculate an n-base logarithm.

Math.logn(x,n) - $\log_n x$

const four = Math.logn(81,3);
// the base-3 logarithm of 81

console.log(four);
// 4