autocookieclicker.js

// Auto clicking and optimal shopping for Cookie Clicker.
// http://orteil.dashnet.org/cookieclicker/
//
// Input this into developer console of your browser!
// You can stop with "stop()" in console.

var stop = (function(){

var def = [0.5, 0.5, 2, 10, 40, 100, 400, 6666, 98765, 999999];

function toNum(str) {
  return Number(str.replace(/,/g, ''));
}

function getCPS(num) {
  var el = document.getElementById('rowInfoContent' + num);
  if (!el) return def[num];
  var match = /• ([\d,]+)[\s\S]*producing ([\d,.]+)/.exec(el.innerText);
  if (match[1] === '0') {
    return def[num];
  }
  return toNum(match[2]) / toNum(match[1]);
}

function getCost(num) {
  var a = document.querySelector('#product' + num + ' .price').innerText;
  return toNum(a) / getCPS(num);
}

function getMinCostIdx() {
  var minIdx = 0;
  var ar = [0,1,2,3,4,5,6,7,8,9].map(getCost);
  console.log(ar.map(function(item) {return Math.round(item).toString().replace(/(\d)(?=(\d\d\d)+(?!\d))/g, "$1,")}));
  ar.reduce(function(min, cur, idx) {
    if (min > cur) {
      minIdx = idx; return cur;
    }
    return min;
  });
  return minIdx;
}

function buyMinCostProduct() {
  document.getElementById('product' + getMinCostIdx()).click();
}

function buyUpgrade(num) {
  var el = document.querySelectorAll('#upgrades .upgrade')[num];
  el && el.click();
}

function clickGoldenCookie() {
  var el = document.getElementById('goldenCookie');
  el && el.click();
}

var buyTimer = setInterval(function() {
  clickGoldenCookie();
  buyUpgrade(0);
  buyMinCostProduct();
}, 500);

var bigCookie = document.getElementById('bigCookie');
var clickTimer = setInterval(function() {bigCookie.click();}, 0);

return function() {
  clearInterval(buyTimer);
  clearInterval(clickTimer);
};
})();