Question

这似乎是一个非常简单的问题，但我似乎无法得到答案。如何使用JavaScript转换iso时间戳以显示日期/时间？

示例时间戳：2012-04-15T18：06：08-07：00

感谢任何帮助，谷歌让我失望。谢谢。

Answer 1

将其传递给Date构造函数。

> var date = new Date('2012-04-15T18:06:08-07:00')
> date
  Mon Apr 16 2012 04:06:08 GMT+0300 (EEST)

有关日期的更多信息，请查看https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Date。

Answer 2

最新版本的javascript（在某些最新浏览器中为v1.85或更高版本）可以直接处理ISO日期，因此您只需将字符串直接传递给Date()构造函数，如下所示：

var jsDate = new Date("2012-04-15T18:06:08-07:00");

但旧版浏览器（IE9之前的任何IE版本，4之前的任何版本的Firefox等等）都不支持此功能。对于那些浏览器，您可以获得一个可以为您执行此操作的库，如datejs，也可以像这样自己解析：

var t = "2012-04-15T18:06:08-07:00";

function convertDate(t) {
    var dateRE = /(\d+)-(\d+)-(\d+)T(\d+):(\d+):(\d+)([+\-]\d+):(\d+)/;
    var match = t.match(dateRE);
    var nums = [], item, date;
    if (match) {
        for (var i = 1; i < match.length; i++) {
            nums.push(parseInt(match[i], 10));
        }
        if (nums[7] < 0) {
            nums[8] *= -1;
        }
        return(new Date(nums[0], nums[1] - 1, nums[2], nums[3] - nums[6], nums[4] - nums[7], nums[5]));
    }
}

var jsDate = convertDate(t);

此处的演示演示：http://jsfiddle.net/jfriend00/QSgn6/

Answer 3

这是迄今为止我见过的最好的，能够使用客户端的桌面时区并通过时区设置实时更改：

<script type="text/javascript">
    //Use: timeZoneConvert("2015-11-03T17:36:20.970");
    //Mon Nov 02 2015 17:36:20 GMT-0600 (Central Standard Time)  [Date object]

    //To format string use: timeZoneConvertFormatted("2015-11-03T17:36:20.970")
    //November 2, 2015 5:36 PM

    //Works even when I change client timezone to Pacific Standard
    //Mon Nov 02 2015 15:36:20 GMT-0800 (Pacific Standard Time)



var months = ["", "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
function timeZoneConvert(dateStr) {
    var d = parse_iso8601(dateStr);
    //Change (- 360) constant for your server, mine is Central Standard
    var dTimezoneOffset = new Date(d.getTime() - ((new Date()).getTimezoneOffset() - 360)*60000);
    return dTimezoneOffset;
}   

function timeZoneConvertFormatted(dateStr) {
    return fDateTime(timeZoneConvert(dateStr));
}   


function fDateTime(date1) {
    var date = date1.getDate();
    var year = date1.getFullYear();
    var month = months[date1.getMonth() + 1];
    var h = date1.getHours();
    var m = date1.getMinutes();
    var ampm = "AM";
    if(m < 10) {
        m = "0" + m;
    }
    if(h > 12) {
        h = h - 12;
        var ampm = "PM";
    }
    return month + " " + date + ", " + year + " " + h + ":" + m + " " + ampm;
}



    var iso8601extended = /^\d{4}(-\d{2}(-\d{2}([T ]\d{2}(:\d{2}(:\d{2})?)?([,.]\d+)?(Z|[+-]\d{2}(:\d{2})?)?)?)?)?$/;
    var iso8601basic = new RegExp(iso8601extended.source.replace(/[:-]\\d/g, '\\d'));
    var firstNumber = /[^\d]*(\d+)/g;
    function parse_iso8601(s) {
        s = s.replace(/,/g, '.');
        var matches = iso8601extended.exec(s);
        if (matches) {
            s = s.substr(0, 10).replace(/-/g, '') + s.substr(10).replace(/:/g, '');
        }
        matches = iso8601basic.exec(s);
        if (!matches) {
            return null;
        }
        var d = new Date();
        d.setUTCFullYear(toNumber(matches[0].substring(0, 4)));
        d.setUTCMonth(matches[1] ? toNumber(matches[1].substr(0, 2)) - 1 : 0);
        d.setUTCDate(matches[2] ? toNumber(matches[2].substr(0, 2)) : 1);
        var hours = 0, minutes = 0, seconds = 0, milliseconds = 0;
        var fraction = matches[6] ? parseFloat(matches[6]) : 0;
        if (matches[3]) {
            hours = toNumber(matches[3].substr(1, 2));
            if (matches[4]) {
                minutes = toNumber(matches[4].substr(0, 2));
                if (matches[5]) {
                    seconds = toNumber(matches[5].substr(0, 2));
                    milliseconds = 1000 * fraction;
                } else {
                    seconds = 60 * fraction;
                }
            } else {
                minutes = 60 * fraction;
            }
        }
        if (!matches[7]) {
            d.setHours(hours);
            d.setMinutes(minutes);
        } else {
            d.setUTCHours(hours);
            d.setUTCMinutes(minutes);
        }
        d.setUTCSeconds(seconds);
        d.setUTCMilliseconds(milliseconds);
        if (matches[7] && matches[7] != 'Z') {
            offset = toNumber(matches[7].substr(1, 2)) * 60;
            if (matches[8]) {
                 offset += toNumber(matches[8].substr(0, 2));
            }
            d.setTime(d.getTime() + 60000 * offset * (matches[7].substr(0, 1) == '-' ? 1 : -1));
        }
        return d;
    }
    function toNumber(s) {
        return parseInt(s.replace(/^0+(\d)/, '$1'));
    }
</script>

使用Javascript将iso时间戳转换为日期格式？

3 个答案: