javascript 如何使用 moment.js 解析 ISO 8601 格式的持续时间？
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How do I parse an ISO 8601 formatted duration using moment.js?
提问by Qrious
I have an ISO 8601 formatted duration, for eg: PT5M or PT120S.
我有一个 ISO 8601 格式的持续时间，例如：PT5M 或 PT120S。
Is there any way I can parse these using moment.js and fetch the number of minutes specified in the duration?
有什么办法可以使用moment.js解析这些并获取持续时间中指定的分钟数吗？
Thank you!
谢谢！
PS: I looked at Parse ISO 8601 durationsand Convert ISO 8601 time format into normal time duration
PS：我查看了Parse ISO 8601 durationsand Convert ISO 8601 time format into normal time duration
but was keen to know if this was do-able with moment.
但很想知道这是否可行。
回答by bollwyvl
moment doesparse ISO-formatted durationsout of the box with the moment.durationmethod:
moment确实使用以下方法解析 ISO 格式的持续时间moment.duration：
moment.duration('P1Y2M3DT4H5M6S')
The regex is gnarly, but supports a number of edge cases and is pretty thoroughly tested.
回答by Mark Dickson Jr.
It doesn't appear to be one of the supported formats: http://momentjs.com/docs/#/durations/
它似乎不是支持的格式之一：http: //momentjs.com/docs/#/durations/
There aren't any shortage of github repos that solve it with regex (as you saw, based on the links you provided). This solves it without using Date. Is there even a need for moment?
使用正则表达式解决它的 github 存储库并不缺乏（如您所见，基于您提供的链接）。这在不使用日期的情况下解决了它。甚至需要片刻吗？
var regex = /P((([0-9]*\.?[0-9]*)Y)?(([0-9]*\.?[0-9]*)M)?(([0-9]*\.?[0-9]*)W)?(([0-9]*\.?[0-9]*)D)?)?(T(([0-9]*\.?[0-9]*)H)?(([0-9]*\.?[0-9]*)M)?(([0-9]*\.?[0-9]*)S)?)?/
minutesFromIsoDuration = function(duration) {
var matches = duration.match(regex);
return parseFloat(matches[14]) || 0;
}
If you test it:
如果你测试它：
minutesFromIsoDuration("PT120S");
minutesFromIsoDuration("PT120S");
0
0
minutesFromIsoDuration("PT5M");
minutesFromIsoDuration("PT5M");
5
5
If you want the logical duration in minutes, you might get away with:
如果您想要以分钟为单位的逻辑持续时间，您可能会逃脱：
return moment.duration({
years: parseFloat(matches[3]),
months: parseFloat(matches[5]),
weeks: parseFloat(matches[7]),
days: parseFloat(matches[9]),
hours: parseFloat(matches[12]),
minutes: parseFloat(matches[14]),
seconds: parseFloat(matches[16])
});
followed by
其次是
result.as("minutes");
