找到一個介紹js日期對象的文章:
http://blog.csdn.net/xxd851116/article/details/3859587
另外有個指令碼,可以格式化日期的,放在最後。
建立一個日期對象:
var objDate=new Date([arguments list]);
參數形式有以下5種:
new Date("month dd,yyyy hh:mm:ss");
new Date("month dd,yyyy");
new Date(yyyy,mth,dd,hh,mm,ss);
new Date(yyyy,mth,dd);
new Date(ms);
需要注意最後一種形式,參數表示的是需要建立的時間和GMT時間1970年1月1日之間相差的毫秒數。各種函數的含義如下:
month:用英文表示月份名稱,從January到December
mth:用整數表示月份,從0(1月)到11(12月)
dd:表示一個月中的第幾天,從1到31
yyyy:四位元表示的年份
hh:小時數,從0(午夜)到23(晚11點)
mm:分鐘數,從0到59的整數
ss:秒數,從0到59的整數
ms:毫秒數,為大於等於0的整數
new Date("February 3,2009")
new Date("February 3,2009 10:52:03")
new Date(Date.parse("February 3,2009"))
new Date(Date.parse("February 3,2009 10:52:03"))
new Date(2009,1,3)
new Date(2009,1,3,10,52,03)
new Date("2009/02/03");
new Date("2009/02/03 11:12:13");
new Date(Date.parse("2009/02/03"))
new Date("2009-02-03");//Output: NAN
new Date(Date.parse(2009,1,3))//Output: NAN
new Date(Date.parse(2009,1,3,10,52,03))//Output: NAN
日期格式化工具:
使用方法:
dateFormat(d, "yyyy-mm-dd");dateFormat(d, "yyyy-mm-dd HH:mm:ss");
工具:
View Code
/* * Date Format 1.2.3 * (c) 2007-2009 Steven Levithan <stevenlevithan.com> * MIT license * * Includes enhancements by Scott Trenda <scott.trenda.net> * and Kris Kowal <cixar.com/~kris.kowal/> * * Accepts a date, a mask, or a date and a mask. * Returns a formatted version of the given date. * The date defaults to the current date/time. * The mask defaults to dateFormat.masks.default. */var dateFormat = function () { var token = /d{1,4}|m{1,4}|yy(?:yy)?|([HhMsTt])\1?|[LloSZ]|"[^"]*"|'[^']*'/g, timezone = /\b(?:[PMCEA][SDP]T|(?:Pacific|Mountain|Central|Eastern|Atlantic) (?:Standard|Daylight|Prevailing) Time|(?:GMT|UTC)(?:[-+]\d{4})?)\b/g, timezoneClip = /[^-+\dA-Z]/g, pad = function (val, len) { val = String(val); len = len || 2; while (val.length < len) val = "0" + val; return val; }; // Regexes and supporting functions are cached through closure return function (date, mask, utc) { var dF = dateFormat; // You can't provide utc if you skip other args (use the "UTC:" mask prefix) if (arguments.length == 1 && Object.prototype.toString.call(date) == "[object String]" && !/\d/.test(date)) { mask = date; date = undefined; } // Passing date through Date applies Date.parse, if necessary date = date ? new Date(date) : new Date; if (isNaN(date)) throw SyntaxError("invalid date"); mask = String(dF.masks[mask] || mask || dF.masks["default"]); // Allow setting the utc argument via the mask if (mask.slice(0, 4) == "UTC:") { mask = mask.slice(4); utc = true; } var _ = utc ? "getUTC" : "get", d = date[_ + "Date"](), D = date[_ + "Day"](), m = date[_ + "Month"](), y = date[_ + "FullYear"](), H = date[_ + "Hours"](), M = date[_ + "Minutes"](), s = date[_ + "Seconds"](), L = date[_ + "Milliseconds"](), o = utc ? 0 : date.getTimezoneOffset(), flags = { d: d, dd: pad(d), ddd: dF.i18n.dayNames[D], dddd: dF.i18n.dayNames[D + 7], m: m + 1, mm: pad(m + 1), mmm: dF.i18n.monthNames[m], mmmm: dF.i18n.monthNames[m + 12], yy: String(y).slice(2), yyyy: y, h: H % 12 || 12, hh: pad(H % 12 || 12), H: H, HH: pad(H), M: M, MM: pad(M), s: s, ss: pad(s), l: pad(L, 3), L: pad(L > 99 ? Math.round(L / 10) : L), t: H < 12 ? "a" : "p", tt: H < 12 ? "am" : "pm", T: H < 12 ? "A" : "P", TT: H < 12 ? "AM" : "PM", Z: utc ? "UTC" : (String(date).match(timezone) || [""]).pop().replace(timezoneClip, ""), o: (o > 0 ? "-" : "+") + pad(Math.floor(Math.abs(o) / 60) * 100 + Math.abs(o) % 60, 4), S: ["th", "st", "nd", "rd"][d % 10 > 3 ? 0 : (d % 100 - d % 10 != 10) * d % 10] }; return mask.replace(token, function ($0) { return $0 in flags ? flags[$0] : $0.slice(1, $0.length - 1); }); };}();// Some common format stringsdateFormat.masks = { "default": "ddd mmm dd yyyy HH:MM:ss", shortDate: "m/d/yy", mediumDate: "mmm d, yyyy", longDate: "mmmm d, yyyy", fullDate: "dddd, mmmm d, yyyy", shortTime: "h:MM TT", mediumTime: "h:MM:ss TT", longTime: "h:MM:ss TT Z", isoDate: "yyyy-mm-dd", isoTime: "HH:MM:ss", isoDateTime: "yyyy-mm-dd'T'HH:MM:ss", isoUtcDateTime: "UTC:yyyy-mm-dd'T'HH:MM:ss'Z'"};// Internationalization stringsdateFormat.i18n = { dayNames: [ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ], monthNames: [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ]};// For convenience...Date.prototype.format = function (mask, utc) { return dateFormat(this, mask, utc);};