将.net日期/时间格式字符串转换为Javascript日期/时间格式字符串

所以简短的答案似乎是，没有标准化日期格式的方法，所以…我写了一个。这个小库有几个限制;例如，我完全忽略了时区(无论如何，我所有的工作都是UTC)，我不检查转义的特殊字符，但它应该满足我的目的:

/************************************************************
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;
}

你可以这样使用:

<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

如果可以，在。net应用程序中，当您将DateTime对象转换为字符串时，请这样做:

dtStr = dt.ToString("o"); // ISO 8601 standard date time format

这样，您就不必担心日期时间字符串的区域设置差异，大多数语言应该能够毫无问题地处理这种格式

momentjs已经很好地处理了javascript中的日期。它应该满足你俩的需求。

更新:momentjs将允许您使用自己的格式字符串'MM-DD-YYYY'或其任何变体来显示日期。