按 ISO 8601 日期对数组进行排序 [英] Sort array by ISO 8601 date

问题描述

如何按日期(ISO 8601)对这个数组进行排序?

how can i sort this array by date (ISO 8601)?

var myArray = new Array();

myArray[0] = { name:'oldest', date:'2007-01-17T08:00:00Z' }
myArray[1] = { name:'newest', date:'2011-01-28T08:00:00Z' }
myArray[2] = { name:'old',    date:'2009-11-25T08:00:00Z' }

游乐场:
http://jsfiddle.net/4tUZt/

提前致谢！

推荐答案

按字典顺序排序:

正如@kdbanman 指出的那样，ISO8601^{请参阅一般原则} 是为字典排序而设计的.因此，ISO8601 字符串表示可以像任何其他字符串一样排序，这将给出预期的顺序.

Sort Lexicographically:

As @kdbanman points out, ISO8601^{See General principles} was designed for lexicographical sort. As such the ISO8601 string representation can be sorted like any other string, and this will give the expected order.

'2007-01-17T08:00:00Z' < '2008-01-17T08:00:00Z' === true

所以你会实现:

var myArray = [
    { name:'oldest', date:'2007-01-17T08:00:00Z' },
    { name:'newest', date:'2011-01-28T08:00:00Z' },
    { name:'old',    date:'2009-11-25T08:00:00Z' }
];

myArray.sort(function(a, b) {
    return (a.date < b.date) ? -1 : ((a.date > b.date) ? 1 : 0);
});

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使用 JavaScript 日期排序:

旧版本的 WebKit 和 Internet Explorer 不支持 ISO 8601 日期，因此您必须制作兼容的日期.FireFox 和现代 WebKit 都支持它有关 Date.parse 支持的更多信息，请参见此处JavaScript:哪些浏览器支持使用 Date.parse 解析 ISO-8601 日期字符串

---

Sort using JavaScript Date:

Older versions of WebKit and Internet Explorer do not support ISO 8601 dates, so you have to make a compatible date. It is supported by FireFox, and modern WebKit though See here for more information about Date.parse support JavaScript: Which browsers support parsing of ISO-8601 Date String with Date.parse

这是一篇非常好的文章，用于创建与 Javascript ISO 8601 兼容的日期，然后您可以像常规 javascript 日期一样对其进行排序.

Here is a very good article for creating a Javascript ISO 8601 compatible date, which you can then sort like regular javascript dates.

http:///webcloud.se/log/JavaScript-and-ISO-8601/

Date.prototype.setISO8601 = function (string) {
    var regexp = "([0-9]{4})(-([0-9]{2})(-([0-9]{2})" +
    "(T([0-9]{2}):([0-9]{2})(:([0-9]{2})(\.([0-9]+))?)?" +
    "(Z|(([-+])([0-9]{2}):([0-9]{2})))?)?)?)?";
    var d = string.match(new RegExp(regexp));

    var offset = 0;
    var date = new Date(d[1], 0, 1);

    if (d[3]) { date.setMonth(d[3] - 1); }
    if (d[5]) { date.setDate(d[5]); }
    if (d[7]) { date.setHours(d[7]); }
    if (d[8]) { date.setMinutes(d[8]); }
    if (d[10]) { date.setSeconds(d[10]); }
    if (d[12]) { date.setMilliseconds(Number("0." + d[12]) * 1000); }
    if (d[14]) {
        offset = (Number(d[16]) * 60) + Number(d[17]);
        offset *= ((d[15] == '-') ? 1 : -1);
    }

    offset -= date.getTimezoneOffset();
    time = (Number(date) + (offset * 60 * 1000));
    this.setTime(Number(time));
}

用法:

console.log(myArray.sort(sortByDate));  

function sortByDate( obj1, obj2 ) {
    var date1 = (new Date()).setISO8601(obj1.date);
    var date2 = (new Date()).setISO8601(obj2.date);
    return date2 > date1 ? 1 : -1;
}

更新用法以包括排序技术信用@nbrooks

Updated usage to include sorting technique credit @nbrooks

这篇关于按 ISO 8601 日期对数组进行排序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！