query.js

function Q(s, f) {
  var r = document.querySelectorAll(s), a = [ ];
  [ ].slice.call(r).forEach(function(e, i) {
    a[i] = e;
    f && f(e);
  });
  return a;
}

function Q(s, f) {
  var r = document.querySelectorAll(s), a = [ ];
  Array.prototype.forEach.call(r, function(e, i) {
    a[i] = e;
    f && f(e);
  });
  return a;
}