是否有JavaScript库或其他某种机制可以让我将.NET日期/时间格式字符串(即yyyy-MM-dd HH:mm:ss
)传递给javascript函数,并使其相应地解析提供的datetime值?我已经寻找了一段时间,但似乎找不到我想要的东西。
我想像的用法将使我能够从.NET提供程序提供自定义格式的字符串,并允许我现有的JavaScript库(例如Kendo)一致地呈现日期/时间。
由于我的要求似乎有些混乱,因此我将尝试更加详细:
我有一个User Preferences
表,可以让用户选择日期,时间戳和时间等格式,并且可以使用.NET字符串格式完全自定义。从我的.NET应用程序中轻松渲染它们。
但是,我也在使用Kendo,它将从我的服务器收集原始日期/时间数据。我需要让它呈现的数据在javascript库和.NET呈现引擎之间保持一致的格式。
因此,简短的答案似乎是,没有一种标准化日期格式的方法,所以...我写了一个。这个小图书馆有几个局限性。例如,我完全忽略了时区(无论如何,我的工作都是UTC),并且我没有检查转义的特殊字符,但是出于我的目的应该这样做:
/************************************************************
Feel free to use this as you like.
************************************************************/
var shortMonths = [
'Jan',
'Feb',
'Mar',
'Apr',
'Jun',
'Jul',
'Aug',
'Sep',
'Oct',
'Nov',
'Dec'
];
var fullMonths = [
'January',
'February',
'March',
'April',
'May',
'June',
'July',
'August',
'September',
'October',
'November',
'December'
];
var shortDays = [
'Sun',
'Mon',
'Tue',
'Wed',
'Thu',
'Fri',
'Sat'
];
var fullDays = [
'Sunday',
'Monday',
'Tuesday',
'Wednesday',
'Thursday',
'Friday',
'Saturday'
];
var shortAmPm = [
'A',
'P'
];
var fullAmPm = [
'AM',
'PM'
];
function dotNetDateTimeFormat(date, format) {
//we need a date
if (!(date instanceof Date && !isNaN(date.valueOf()))) return '';
//if no format is given, send back default yyyy-MM-dd
format = format || '';
if (format == '')
return d.getFullYear + '-' + padZeroes(d.getMonth(), 2) + '-' + padZeroes(d.getDate(), 2);
//check for standard formats
switch (format) {
case 'd': //short date pattern
return formatDateString(date, 'M/d/yyyy');
case 'D': //long date pattern
return formatDateString(date, 'dddd, MMMM d, yyyy');
case 'f': //Full date/time pattern (short time)
return formatDateString(date, 'dddd, MMMM d, yyyy h:mm tt');
case 'F': //Full date/time pattern (long time)
return formatDateString(date, 'dddd, MMMM d, yyyy h:mm:ss tt');
case 'g': //General date/time pattern (short time)
return formatDateString(date, 'M/d/yyyy h:mm tt');
case 'G': //General date/time pattern (long time)
return formatDateString(date, 'M/d/yyyy h:mm:ss tt');
case 'M': //Month/day pattern
case 'm': //Month/day pattern
return formatDateString(date, 'MMMM d');
case 'O': //Round-trip date/time pattern
case 'o': //Round-trip date/time pattern
return formatDateString(date, 'yyyy-MM-ddTHH:mm:ss.fff-00:00');
case 'R': //RFC1123 pattern
case 'r': //RFC1123 pattern
return formatDateString(date, 'ddd, d MMM yyyy HH:mm:ss GMT');
case 's': //Sortable date/time pattern
return formatDateString(date, 'yyyy-MM-ddTHH:mm:ss');
case 't': //Short time pattern
return formatDateString(date, 'h:mm tt');
case 'T': //Long time pattern
return formatDateString(date, 'h:mm:ss tt');
case 'u': //Universal sortable date/time pattern
return formatDateString(date, 'yyyy-MM-dd HH:mm:ssZ');
case 'U': //Universal full date/time pattern
return formatDateString(date, 'dddd, MMMM d, yyyy h:mm:ss tt');
case 'Y': //Year month pattern
case 'y': //Year month pattern
return formatDateString(date, 'MMMM, yyyy');
default: // custom string, no standard format.
return formatDateString(date, format);
}
}
function formatDateString(date, format) {
var yyyy = date.getFullYear();
var M = date.getMonth();
var d = date.getDate();
var day = date.getDay();
var H = date.getHours();
var h = H;
var pm = h > 12;
if (pm) h = H - 12;
var m = date.getMinutes();
var s = date.getSeconds();
var f = date.getMilliseconds();
format = format
.replace(/GMT/g, '*00*')
.replace(/yyyy/g, '*01*')
.replace(/yyy/g, '*02*')
.replace(/yy/g, '*03*')
.replace(/y/g, '*04*')
.replace(/MMMM/g, '*05*')
.replace(/MMM/g, '*06*')
.replace(/MM/g, '*07*')
.replace(/M/g, '*08*')
.replace(/dddd/g, '*09*')
.replace(/ddd/g, '*10*')
.replace(/dd/g, '*11*')
.replace(/d/g, '*12*')
.replace(/HH/g, '*13*')
.replace(/H/g, '*14*')
.replace(/hh/g, '*15*')
.replace(/h/g, '*16*')
.replace(/mm/g, '*17*')
.replace(/m/g, '*18*')
.replace(/ss/g, '*19*')
.replace(/s/g, '*20*')
.replace(/fff/g, '*21*')
.replace(/ff/g, '*22*')
.replace(/f/g, '*23*')
.replace(/FFF/g, '*24*')
.replace(/FF/g, '*25*')
.replace(/F/g, '*26*')
.replace(/tt/g, pm ? 'PM' : 'AM')
.replace(/t/g, pm ? 'P' : 'A')
.replace('*00*', 'GMT')
.replace('*01*', yyyy)
.replace('*02*', yyyy.toString().substr(-3, 3))
.replace('*03*', yyyy.toString().substr(-2, 2))
.replace('*04*', yyyy.toString().substr(-1, 1))
.replace('*05*', getFullMonth(M.toString()))
.replace('*06*', getShortMonth(M.toString()))
.replace('*07*', padZeroes(M.toString(), 2))
.replace('*08*', M.toString())
.replace('*09*', getFullDay(day.toString()))
.replace('*10*', getShortDay(day.toString()))
.replace('*11*', padZeroes(d.toString(), 2))
.replace('*12*', d.toString())
.replace('*13*', padZeroes(H.toString(), 2))
.replace('*14*', H.toString())
.replace('*15*', padZeroes(h.toString(), 2))
.replace('*16*', h.toString())
.replace('*17*', padZeroes(m.toString(), 2))
.replace('*18*', m.toString())
.replace('*19*', padZeroes(s.toString(), 2))
.replace('*20*', s)
.replace('*21*', padZeroes(f.toString(), 3))
.replace('*22*', padZeroes(Math.round(f / 10), 2).toString())
.replace('*23*', Math.round(f / 100).toString())
.replace('*24*', blankZero(padZeroes(f.toString(), 3)))
.replace('*25*', blankZero(padZeroes(Math.round(f / 10), 2).toString()))
.replace('*26*', blankZero(Math.round(f / 100).toString()))
;
return format;
}
function getShortMonth(month) {
return shortMonths[month];
}
function getFullMonth(month) {
return fullMonths[month];
}
function getShortDay(day) {
return shortDays[day];
}
function getFullDay(day) {
return fullDays[day];
}
function padZeroes(toPad, numDigits) {
toPad = toPad || '';
var zeroes = Array(numDigits).join('0');
return (zeroes + toPad).substr(-numDigits, numDigits);
}
function blankZero(number) {
var n = parseFloat(number);
if (isNaN(number)) return '';
if (n == 0.0) return '';
return n;
}
您可以这样使用它:
<div id="test-format"></div>
<script type="text/javascript">
var date = new Date(2009, 6, 15, 13, 45, 30, 660);
var formats = [
dotNetDateTimeFormat(date, 'd'),
dotNetDateTimeFormat(date, 'D'),
dotNetDateTimeFormat(date, 'f'),
dotNetDateTimeFormat(date, 'F'),
dotNetDateTimeFormat(date, 'g'),
dotNetDateTimeFormat(date, 'G'),
dotNetDateTimeFormat(date, 'm'),
dotNetDateTimeFormat(date, 'M'),
dotNetDateTimeFormat(date, 'o'),
dotNetDateTimeFormat(date, 'O'),
dotNetDateTimeFormat(date, 'r'),
dotNetDateTimeFormat(date, 'R'),
dotNetDateTimeFormat(date, 's'),
dotNetDateTimeFormat(date, 't'),
dotNetDateTimeFormat(date, 'T'),
dotNetDateTimeFormat(date, 'u'),
dotNetDateTimeFormat(date, 'U'),
dotNetDateTimeFormat(date, 'y'),
dotNetDateTimeFormat(date, 'Y'),
dotNetDateTimeFormat(date, 'yyyyMMddHHmmss')
];
$(function () {
var f = formats.join('<br />');
$('#test-format').html(f);
});
</script>
欢迎改进。
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