使用JavaScript转换ISO 8601持续时间 [英] Convert ISO 8601 duration with JavaScript

问题描述

如何使用JavaScript转换持续时间，例如:

How can I convert duration with JavaScript, for example:

PT16H30M

推荐答案

从理论上讲，您可以获得一个ISO8601持续时间，如下所示:

You could theoretically get an ISO8601 Duration that looks like the following:

P1Y4M3W2DT10H31M3.452S

P1Y4M3W2DT10H31M3.452S

我编写了以下正则表达式以将其解析为组:

I wrote the following regular expression to parse this into groups:

(-)?P(?:([.,\d]+)Y)?(?:([.,\d]+)M)?(?:([.,\d]+)W)?(?:([.,\d]+)D)?T(?:([.,\d]+)H)?(?:([.,\d]+)M)?(?:([.,\d]+)S)?

这并不漂亮，精通正则表达式的人也许可以写出更好的东西.

It's not pretty, and someone better versed in regular expressions might be able to write a better one.

这些小组归结为以下内容:

The groups boil down into the following:

1. 签名
2. 年份
3. 月
4. 周
5. 天
6. 小时
7. 分钟
8. 第二

我编写了以下函数将其转换为漂亮的对象:

I wrote the following function to convert it into a nice object:

var iso8601DurationRegex = /(-)?P(?:([.,\d]+)Y)?(?:([.,\d]+)M)?(?:([.,\d]+)W)?(?:([.,\d]+)D)?T(?:([.,\d]+)H)?(?:([.,\d]+)M)?(?:([.,\d]+)S)?/;

window.parseISO8601Duration = function (iso8601Duration) {
    var matches = iso8601Duration.match(iso8601DurationRegex);

    return {
        sign: matches[1] === undefined ? '+' : '-',
        years: matches[2] === undefined ? 0 : matches[2],
        months: matches[3] === undefined ? 0 : matches[3],
        weeks: matches[4] === undefined ? 0 : matches[4],
        days: matches[5] === undefined ? 0 : matches[5],
        hours: matches[6] === undefined ? 0 : matches[6],
        minutes: matches[7] === undefined ? 0 : matches[7],
        seconds: matches[8] === undefined ? 0 : matches[8]
    };
};

像这样使用:

window.parseISO8601Duration('P1Y4M3W2DT10H31M3.452S');

希望这可以帮助某个人.

Hope this helps someone out there.

如果您使用的是 momentjs ，则它们具有ISO8601持续时间解析功能.您需要一个插件进行格式化，它似乎无法处理工期在撰写本说明之日的期间内已指定了几周.

If you are using momentjs, they have ISO8601 duration parsing functionality available. You'll need a plugin to format it, and it doesn't seem to handle durations that have weeks specified in the period as of the writing of this note.

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