1
points
This shows a logarithmic function calculation with own base in JavaScript.
Note: read this article to see Math.log() method documentation.
2. Logarithm with custom base custom method example
// ONLINE-RUNNER:browser;
function calculateLogarithm(base, x) {
var a = Math.log(x);
var b = Math.log(base);
return a / b;
}
// Logarithm with custom base:
// base x y
console.log( calculateLogarithm( 2, 2 ) ); // 1
console.log( calculateLogarithm( 2, 4 ) ); // 2
console.log( calculateLogarithm( Math.E, Math.E ) ); // 1
console.log( calculateLogarithm( 3, 9 ) ); // ~2
console.log( calculateLogarithm( 3, 81 ) ); // ~4
console.log( calculateLogarithm( 10, 10 ) ); // 1
