How to convert ISOString to local ISOString in javascript?

Question

I have ISO 8086 style string(e.g. '2013-02-18T16:39:17+00:00')

And I want to convert that to local ISO_8601 style string...

'2013-02-18T16:39:17+00:00' -> '2013-02-19T01:39:17+09:00'

What should I do?

just I tried "new Date("2013-02-18T16:39:17+00:00").toLocaleString()" — chobo, Feb 18 '13 at 17:18

score 1 · Answer 1 · answered Feb 18 '13 at 17:38

There only is a .toISOString() method, but that will not use the local timezone. For that, you will need to format the string yourself:

function toLocaleISOString(date) {
    function pad(n) { return ("0"+n).substr(-2); }

    var day = [date.getFullYear(), pad(date.getMonth()+1), pad(date.getDate())].join("-"),
        time = [date.getHours(), date.getMinutes(), date.getSeconds()].map(pad).join(":");
    if (date.getMilliseconds())
        time += "."+date.getMilliseconds();
    var o = date.getTimezoneOffset(),
        h = Math.floor(Math.abs(o)/60),
        m = Math.abs(o) % 60,
        o = o==0 ? "Z" : (o<0 ? "+" : "-") + pad(h) + ":" + pad(m);
    return day+"T"+time+o;
}

Thats the best `pad` implementation in JS I have seen so far :) — crackmigg, Feb 18 '13 at 17:40
@migg: It's a quite [standard implementation](http://stackoverflow.com/q/5366849/1048572). — Bergi, Feb 18 '13 at 17:44

How to convert ISOString to local ISOString in javascript?

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