regexp解析ISO-8601 [英] regexp Parsing ISO-8601

问题描述

作为对我正在尝试帮助的问题的跟进:

As a followup to a question I am trying to help with: javascript date.parse difference in chrome and other browsers

在更新我在这里找到的正则表达式时，我需要帮助:

I need assistance in updating the regex I found here:

JavaScript:哪些浏览器支持使用Date.parse解析ISO-8601日期字符串

处理 2011-11-24T09:00:27 + 0200

目前仅应处理ISO日期的 2011-11-24T09:00:27Z 版本

It currently only is supposed to handle the 2011-11-24T09:00:27Z version of the ISO date

即

function(s){
    var day, tz, 
    rx= /^(\d{4}\-\d\d\-\d\d([tT][\d:\.]*)?)([zZ]|([+\-])(\d\d):(\d\d))?$/, 
    p= rx.exec(s) || [];
    if(p[1]){
        day= p[1].split(/\D/).map(function(itm){
            return parseInt(itm, 10) || 0;
        });
        day[1]-= 1;
        day= new Date(Date.UTC.apply(Date, day));
        if(!day.getDate()) return NaN;
        if(p[5]){
            tz= parseInt(p[5], 10)*60;
            if(p[6]) tz += parseInt(p[6], 10);
            if(p[4]== "+") tz*= -1;
            if(tz) day.setUTCMinutes(day.getUTCMinutes()+ tz);
        }
        return day;
    }
    return NaN;
}

使此小提琴与IE和Safari一起使用

to make this fiddle work with IE and Safari

更新:答案奏效.现在，我可以帮助其他人解析从facebook API返回的ISO日期.

UPDATE: The answers worked. Now I can help others parse the ISO date returned from the facebook API.

推荐答案

要使其与格式为 2011-11-24T09:00:27 + 0200 的日期一起使用，只需添加?最后一个:之后的?，例如:

To make it work with dates of the format 2011-11-24T09:00:27+0200 simply add a ? after the last :, eg:

/^(\d{4}\-\d\d\-\d\d([tT][\d:\.]*)?)([zZ]|([+\-])(\d\d):?(\d\d))?$/

解释:

  (
    \d{4}\-\d\d\-\d\d     # date
    ([tT][\d:\.]*)?       # optional time
  )
  (
    [zZ]                  # UTC time zone
    |                     # or
    ([+\-])               # offset sign
    (\d\d)                # hour offset
    :?                    # optional delimiter
    (\d\d)                # minute offset
  )?                      # time zone is optional             

其余代码无需进行任何更改，并且该功能以前支持的所有格式仍将起作用(与先前的答案不同，它会打破四位数的偏移量).

Rest of the code shouldn't need any changes, and all previously supported formats by the function will still work (unlike the previous answer, which breaks four digit offsets).

这篇关于regexp解析ISO-8601的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！