code: function pad(number, length) {
  	// Create an array of the remaining length +1 and join it with 0's
  	return new Array((length || 2) + 1 - String(number).length).join(0) + number;
  }
docs: Pad a string to a given length by adding 0 to the beginning
  @param {Number} number
  @param {Number} length