Convert decimal degrees to degrees minutes seconds.

dd_to_dms.js

/**
 * Converts decimal degrees to degrees minutes seconds.
 * 
 * @param dd the decimal degrees value.
 * @param isLng specifies whether the decimal degrees value is a longitude.
 * @return degrees minutes seconds string in the format 49°15'51.35"N
 */
function convertToDms(dd, isLng) {
  var dir = dd < 0
    ? isLng ? 'W' : 'S'
    : isLng ? 'E' : 'N';

  var absDd = Math.abs(dd);
  var deg = absDd | 0;
  var frac = absDd - deg;
  var min = (frac * 60) | 0;
  var sec = frac * 3600 - min * 60;
  // Round it to 2 decimal points.
  sec = Math.round(sec * 100) / 100;
  return deg + "°" + min + "'" + sec + '"' + dir;
}

מה אומר קוד זה
var dir = dd < 0
? isLng ? 'W' : 'S'
: isLng ? 'E' : 'N';

BUG in this code: convertToDms(36.183333333333, true) = 36°10'60"E