JSFiddle - React, Tailwind, and code Playground

JavaScript

// circuit with single gate for now
var forwardMultiplyGate = function(x, y) { return x * y; };
var x = -2, y = 3; // some input values

// try changing x,y randomly small amounts and keep track of what works best
var tweak_amount = 0.01;
var best_out = -Infinity;
var best_x = x, best_y = y;
for(var k = 0; k < 10000000; k++) {
  var x_try = best_x + tweak_amount * (Math.random() * 2 - 1); // tweak x a bit
  var y_try = best_y + tweak_amount * (Math.random() * 2 - 1); // tweak y a bit
  var out = forwardMultiplyGate(x_try, y_try);
  if(out > best_out) {
    // best improvement yet! Keep track of the x and y
    best_out = out; 
    best_x = x_try, best_y = y_try;
  }
}
alert("best_x = " + best_x + ", best_y = " + best_y + ", best_out = " + best_out );