比较Javascript和时区中的日期 [英] Comparing dates in Javascript and timezones

问题描述

在使用<，>，=，> =和< =比较Javascript中的日期时，在比较中是否以任何方式使用了时区？我希望时区被忽略。

When comparing dates in Javascript using <, >, =, >= and <= is the timezone used in any way in the comparison? I am hoping that the timezone is ignored.

推荐答案

时间戳的字符串表示形式的时区部分已被考虑在内期望，当您将其转换为JavaScript Date 对象时：内部值为简单标量，已标准化为 UTC 。因此，在比较 Date 对象时，不需要特殊的时区处理：

The timezone part of string representation of a timestamp is taken into account as you would expect, when you convert it into JavaScript Date object: the internal value is a simple scalar, normalized to UTC. So there is no need for special timezone handling when comparing Date objects:

var d1 = new Date(Date.parse("Mon, 25 Dec 1995 13:30:00 +0430"));
var d2 = new Date(Date.parse("Mon, 25 Dec 1995 13:30:00 GMT"));
print("d1:", d1);
print("d2:", d2);
if (d1<d2) {
    print("d1 is less then d2");
} else if (d1>d2) {
    print("d1 is greater then d2");
} else {
    print("d1 equals to d2");
}

给出以下输出：

d1: Mon Dec 25 1995 09:00:00 GMT+0000
d2: Mon Dec 25 1995 13:30:00 GMT+0000
d1 is less then d2

[请参见在线演示]

如果比较时间戳的字符串表示形式，很可能会遇到麻烦。

You'll most probably get into trouble if you compare string representations of time stamps.

这篇关于比较Javascript和时区中的日期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！