// ===================================================================
// Author: Matt Kruse <matt@mattkruse.com>
// WWW: http://www.mattkruse.com/
//
// NOTICE: You may use this code for any purpose, commercial or
// private, without any further permission from the author. You may
// remove this notice from your final code if you wish, however it is
// appreciated by the author if at least my web site address is kept.
//
// You may *NOT* re-distribute this code in any way except through its
// use. That means, you can include it in your product, or your web
// site, or any other form where the code is actually being used. You
// may not put the plain javascript up on your site for download or
// include it in your javascript libraries for download. 
// If you wish to share this code with others, please just point them
// to the URL instead.
// Please DO NOT link directly to my .js files from your site. Copy
// the files to your server and use them there. Thank you.
// ===================================================================

var MONTH_NAMES = new Array('January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December', 'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'); var DAY_NAMES = new Array('Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat');
function LZ(x) { return (x < 0 || x > 9 ? "" : "0") + x }
function isDate(val, format) { var date = getDateFromFormat(val, format); if (date == 0) { return false; } return true; }
function compareDates(date1, dateformat1, date2, dateformat2) { var d1 = getDateFromFormat(date1, dateformat1); var d2 = getDateFromFormat(date2, dateformat2); if (d1 == 0 || d2 == 0) { return -1; } else if (d1 > d2) { return 1; } return 0; }
function formatDate(date, format) { format = format + ""; var result = ""; var i_format = 0; var c = ""; var token = ""; var y = date.getYear() + ""; var M = date.getMonth() + 1; var d = date.getDate(); var E = date.getDay(); var H = date.getHours(); var m = date.getMinutes(); var s = date.getSeconds(); var yyyy, yy, MMM, MM, dd, hh, h, mm, ss, ampm, HH, H, KK, K, kk, k; var value = new Object(); if (y.length < 4) { y = "" + (y - 0 + 1900); } value["y"] = "" + y; value["yyyy"] = y; value["yy"] = y.substring(2, 4); value["M"] = M; value["MM"] = LZ(M); value["MMM"] = MONTH_NAMES[M - 1]; value["NNN"] = MONTH_NAMES[M + 11]; value["d"] = d; value["dd"] = LZ(d); value["E"] = DAY_NAMES[E + 7]; value["EE"] = DAY_NAMES[E]; value["H"] = H; value["HH"] = LZ(H); if (H == 0) { value["h"] = 12; } else if (H > 12) { value["h"] = H - 12; } else { value["h"] = H; } value["hh"] = LZ(value["h"]); if (H > 11) { value["K"] = H - 12; } else { value["K"] = H; } value["k"] = H + 1; value["KK"] = LZ(value["K"]); value["kk"] = LZ(value["k"]); if (H > 11) { value["a"] = "PM"; } else { value["a"] = "AM"; } value["m"] = m; value["mm"] = LZ(m); value["s"] = s; value["ss"] = LZ(s); while (i_format < format.length) { c = format.charAt(i_format); token = ""; while ((format.charAt(i_format) == c) && (i_format < format.length)) { token += format.charAt(i_format++); } if (value[token] != null) { result = result + value[token]; } else { result = result + token; } } return result; }
function _isInteger(val) { var digits = "1234567890"; for (var i = 0; i < val.length; i++) { if (digits.indexOf(val.charAt(i)) == -1) { return false; } } return true; }
function _getInt(str, i, minlength, maxlength) { for (var x = maxlength; x >= minlength; x--) { var token = str.substring(i, i + x); if (token.length < minlength) { return null; } if (_isInteger(token)) { return token; } } return null; }
function getDateFromFormat(val, format) { val = val + ""; format = format + ""; var i_val = 0; var i_format = 0; var c = ""; var token = ""; var token2 = ""; var x, y; var now = new Date(); var year = now.getYear(); var month = now.getMonth() + 1; var date = 1; var hh = now.getHours(); var mm = now.getMinutes(); var ss = now.getSeconds(); var ampm = ""; while (i_format < format.length) { c = format.charAt(i_format); token = ""; while ((format.charAt(i_format) == c) && (i_format < format.length)) { token += format.charAt(i_format++); } if (token == "yyyy" || token == "yy" || token == "y") { if (token == "yyyy") { x = 4; y = 4; } if (token == "yy") { x = 2; y = 2; } if (token == "y") { x = 2; y = 4; } year = _getInt(val, i_val, x, y); if (year == null) { return 0; } i_val += year.length; if (year.length == 2) { if (year > 70) { year = 1900 + (year - 0); } else { year = 2000 + (year - 0); } } } else if (token == "MMM" || token == "NNN") { month = 0; for (var i = 0; i < MONTH_NAMES.length; i++) { var month_name = MONTH_NAMES[i]; if (val.substring(i_val, i_val + month_name.length).toLowerCase() == month_name.toLowerCase()) { if (token == "MMM" || (token == "NNN" && i > 11)) { month = i + 1; if (month > 12) { month -= 12; } i_val += month_name.length; break; } } } if ((month < 1) || (month > 12)) { return 0; } } else if (token == "EE" || token == "E") { for (var i = 0; i < DAY_NAMES.length; i++) { var day_name = DAY_NAMES[i]; if (val.substring(i_val, i_val + day_name.length).toLowerCase() == day_name.toLowerCase()) { i_val += day_name.length; break; } } } else if (token == "MM" || token == "M") { month = _getInt(val, i_val, token.length, 2); if (month == null || (month < 1) || (month > 12)) { return 0; } i_val += month.length; } else if (token == "dd" || token == "d") { date = _getInt(val, i_val, token.length, 2); if (date == null || (date < 1) || (date > 31)) { return 0; } i_val += date.length; } else if (token == "hh" || token == "h") { hh = _getInt(val, i_val, token.length, 2); if (hh == null || (hh < 1) || (hh > 12)) { return 0; } i_val += hh.length; } else if (token == "HH" || token == "H") { hh = _getInt(val, i_val, token.length, 2); if (hh == null || (hh < 0) || (hh > 23)) { return 0; } i_val += hh.length; } else if (token == "KK" || token == "K") { hh = _getInt(val, i_val, token.length, 2); if (hh == null || (hh < 0) || (hh > 11)) { return 0; } i_val += hh.length; } else if (token == "kk" || token == "k") { hh = _getInt(val, i_val, token.length, 2); if (hh == null || (hh < 1) || (hh > 24)) { return 0; } i_val += hh.length; hh--; } else if (token == "mm" || token == "m") { mm = _getInt(val, i_val, token.length, 2); if (mm == null || (mm < 0) || (mm > 59)) { return 0; } i_val += mm.length; } else if (token == "ss" || token == "s") { ss = _getInt(val, i_val, token.length, 2); if (ss == null || (ss < 0) || (ss > 59)) { return 0; } i_val += ss.length; } else if (token == "a") { if (val.substring(i_val, i_val + 2).toLowerCase() == "am") { ampm = "AM"; } else if (val.substring(i_val, i_val + 2).toLowerCase() == "pm") { ampm = "PM"; } else { return 0; } i_val += 2; } else { if (val.substring(i_val, i_val + token.length) != token) { return 0; } else { i_val += token.length; } } } if (i_val != val.length) { return 0; } if (month == 2) { if (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0)) { if (date > 29) { return 0; } } else { if (date > 28) { return 0; } } } if ((month == 4) || (month == 6) || (month == 9) || (month == 11)) { if (date > 30) { return 0; } } if (hh < 12 && ampm == "PM") { hh = hh - 0 + 12; } else if (hh > 11 && ampm == "AM") { hh -= 12; } var newdate = new Date(year, month - 1, date, hh, mm, ss); return newdate.getTime(); }
function parseDate(val) { var preferEuro = (arguments.length == 2) ? arguments[1] : false; generalFormats = new Array('y-M-d', 'MMM d, y', 'MMM d,y', 'y-MMM-d', 'd-MMM-y', 'MMM d'); monthFirst = new Array('M/d/y', 'M-d-y', 'M.d.y', 'MMM-d', 'M/d', 'M-d'); dateFirst = new Array('d/M/y', 'd-M-y', 'd.M.y', 'd-MMM', 'd/M', 'd-M'); var checkList = new Array('generalFormats', preferEuro ? 'dateFirst' : 'monthFirst', preferEuro ? 'monthFirst' : 'dateFirst'); var d = null; for (var i = 0; i < checkList.length; i++) { var l = window[checkList[i]]; for (var j = 0; j < l.length; j++) { d = getDateFromFormat(val, l[j]); if (d != 0) { return new Date(d); } } } return null; }