Javascript Jenkins's one-at-a-time hash function

one-at-a-time.js

// An implementation of Jenkins's one-at-a-time hash
// <http://en.wikipedia.org/wiki/Jenkins_hash_function>
// key: string
// return hex
function oneAtATimeHash(key) {
  var hash = 0, i = key.length;
  while (i--) {
    hash += key.charCodeAt(i);
    hash += (hash << 10);
    hash ^= (hash >> 6);
  }
  hash += (hash << 3);
  hash ^= (hash >> 11);
  hash += (hash << 15);
  return hash.toString(16);
}