GLOBAL BINDING

shopify.js

/*
 * Shopify Common JS
 *
 */
if ((typeof window.Shopify) == 'undefined') {
  window.Shopify = {};
}

Shopify.bind = function(fn, scope) {
  return function() {
    return fn.apply(scope, arguments);
  }
};

Shopify.setSelectorByValue = function(selector, value) {
  for (var i = 0, count = selector.options.length; i < count; i++) {
    var option = selector.options[i];
    if (value == option.value || value == option.innerHTML) {
      selector.selectedIndex = i;
      return i;
    }
  }
};

Shopify.addListener = function(target, eventName, callback) {
  target.addEventListener ? target.addEventListener(eventName, callback, false) : target.attachEvent('on'+eventName, callback);
};