如何在JavaScript中获取date时间？
如何用JavaScript格式获取date时间31/12/2010 03:55 AM？
从语义上讲，你可能正在寻找单线
new Date().toLocaleString() 它在用户的语言环境中格式化date。
如果你真的想要一个特定的date格式，我build议使用moment.js库。
如果格式为“固定”，这意味着您不必使用其他格式，则可以使用纯JavaScript而不是使用整个库来格式化date：
//Pad given value to the left with "0" function AddZero(num) { return (num >= 0 && num < 10) ? "0" + num : num + ""; } window.onload = function() { var now = new Date(); var strDateTime = [[AddZero(now.getDate()), AddZero(now.getMonth() + 1), now.getFullYear()].join("/"), [AddZero(now.getHours()), AddZero(now.getMinutes())].join(":"), now.getHours() >= 12 ? "PM" : "AM"].join(" "); document.getElementById("Console").innerHTML = "Now: " + strDateTime; };
<div id="Console"></div>
var now = new Date（）;
now.format（“dd / MM / yyyy hh：mm TT”）;
在这里获取详细信息http://blog.stevenlevithan.com/archives/date-time-format
function pad_2(number) { return (number < 10 ? '0' : '') + number; } function hours(date) { var hours = date.getHours(); if(hours > 12) return hours - 12; // Substract 12 hours when 13:00 and more return hours; } function am_pm(date) { if(date.getHours()==0 && date.getMinutes()==0 && date.getSeconds()==0) return ''; // No AM for MidNight if(date.getHours()==12 && date.getMinutes()==0 && date.getSeconds()==0) return ''; // No PM for Noon if(date.getHours()<12) return ' AM'; return ' PM'; } function date_format(date) { return pad_2(date.getDate()) + '/' + pad_2(date.getMonth()+1) + '/' + (date.getFullYear() + ' ').substring(2) + pad_2(hours(date)) + ':' + pad_2(date.getMinutes()) + am_pm(date); }
代码更正于12年9月3日在10:11
您可以使用下面添加的代码段将date转换为几乎任何格式。
码：
dateFormat(new Date(),"dd/mm/yy h:MM TT") //"20/06/14 6:49 PM"
其他例子
// Can also be used as a standalone function dateFormat(new Date(), "dddd, mmmm dS, yyyy, h:MM:ss TT"); // Saturday, June 9th, 2007, 5:46:21 PM dateFormat(new Date(),"dddd d mmmm yyyy") //Monday 2 June 2014"
摘录 ：
将以下代码从此链接添加到您的代码中。
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 strings dateFormat.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 strings dateFormat.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); };
@Shadow向导的代码应该返回02:45 PM而不是14:45 PM。 所以我修改了他的代码：
function getNowDateTimeStr(){ var now = new Date(); var hour = now.getHours() - (now.getHours() >= 12 ? 12 : 0); return [[AddZero(now.getDate()), AddZero(now.getMonth() + 1), now.getFullYear()].join("/"), [AddZero(hour), AddZero(now.getMinutes())].join(":"), now.getHours() >= 12 ? "PM" : "AM"].join(" "); } //Pad given value to the left with "0" function AddZero(num) { return (num >= 0 && num < 10) ? "0" + num : num + ""; }
