fEqual.js

// A way to compare two floating point numbers for "equality".
const EPSILON = 0.00000001;
function fEqual(a, b) {
  return ((a - b) < EPSILON && (b - a) < EPSILON);
}

// An infamous mistake by rookies is to notice the following.
// 0.1 + 0.2 == 0.3
// And think it is a mistake when the language says false. Us humans would just say 0.3.
// But because of how float points work in computer you end up with something like 0.30000000000000004.

// For more information definatly read this: http://floating-point-gui.de/