iterate over the results of a node list from querySelectorAll()

nodeList.js

// http://jsperf.com/nodelist-to-array/27
// https://developer.mozilla.org/en-US/docs/Web/API/Document.querySelectorAll

var nodeList = function(nodes) {
  return Array.prototype.slice.call(nodes);
};

nodeList(yourNodes).map(function(val, idx, arr) {
  // your logic here
});