String.prototype.repeat

String.prototype.repeat

String.prototype.repeat = function (count) {
  var sDiff = "", sBase2 = count > 0 ? this.valueOf() : "";
  for (var nMask = count; nMask > 1; nMask >>= 1) {
    if (nMask & 1) { sDiff += sBase2; }
    sBase2 += sBase2;
  }
  return sBase2 + sDiff;
};