如何将Moment.js日期转换为用户本地时区？ [英] How to convert Moment.js date to users local timezone?

问题描述

我使用Moment.js和Moment-Timezone框架，并且具有明确在UTC时区中的Moment.js日期对象。如何将其转换为浏览器的当前时区？

I use the Moment.js and Moment-Timezone frameworks, and have a Moment.js date object which is explicitly in UTC timezone. How can I convert that to the current timezone of the browser?

var testDateUtc = moment.tz（2015-01-30 10:00 ：00，UTC）;
var localDate = ???


所以如果我能找出用户本地时区，或者我想将日期对象转换为仅使用本地时区的另一个数据对象，无论实际是什么。

So it would be fine if I could find out the users local time zone; or alternatively I'd like to convert the date object into another data object which just uses the "local timezone", no matter what that actually is.

推荐答案

你不需要使用moment-timezone这个。主要的moment.js库具有使用UTC和本地时区的完整功能。

You do not need to use moment-timezone for this. The main moment.js library has full functionality for working with UTC and the local time zone.

var testDateUtc = moment.utc("2015-01-30 10:00:00");
var localDate = moment(testDateUtc).local();

从那里你可以使用你可能期望的任何功能：

From there you can use any of the functions you might expect:

var s = localDate.format("YYYY-MM-DD HH:mm:ss");
var d = localDate.toDate();
// etc...

请注意，通过传递 testDateUtc ，这是一个时刻对象，回到 moment（）构造函数，它创建一个克隆。否则，当您调用 .local（）时，它也会更改 testDateUtc 值，而不是 localDate 值。

Note that by passing testDateUtc, which is a moment object, back into the moment() constructor, it creates a clone. Otherwise, when you called .local(), it would also change the testDateUtc value, instead of just the localDate value. Moments are mutable.

另请注意，如果您的原始输入包含时区偏移量，例如 +00：00 或 Z ，那么您可以直接用时刻解析。您不需要使用 .utc 或 .local 。例如：

Also note that if your original input contains a time zone offset such as +00:00 or Z, then you can just parse it directly with moment. You don't need to use .utc or .local. For example:

var localDate = moment("2015-01-30T10:00:00Z");

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