Javascript 如何将 Moment.js 日期转换为用户本地时区？
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How to convert Moment.js date to users local timezone?
提问by oliver
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?
我使用 Moment.js 和 Moment-Timezone 框架，并有一个 Moment.js 日期对象，该对象明确位于 UTC 时区。如何将其转换为浏览器的当前时区？
var testDateUtc = moment.tz("2015-01-30 10:00:00", "UTC");
var localDate = ???
var testDateUtc = moment.tz("2015-01-30 10:00:00", "UTC");
var localDate = ???
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.
所以如果我能找出用户的本地时区就好了；或者，我想将日期对象转换为另一个只使用“本地时区”的数据对象，无论实际是什么。
回答by Matt Johnson-Pint
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.
您不需要为此使用时刻时区。主要的 moment.js 库具有使用 UTC 和本地时区的完整功能。
var testDateUtc = moment.utc("2015-01-30 10:00:00");
var localDate = moment(testDateUtc).local();
From there you can use any of the functions you might expect:
从那里您可以使用您可能期望的任何功能：
var s = localDate.format("YYYY-MM-DD HH:mm:ss");
var d = localDate.toDate();
// etc...
Note that by passing testDateUtc, which is a momentobject, back into the moment()constructor, it creates a clone. Otherwise, when you called .local(), it would also change the testDateUtcvalue, instead of just the localDatevalue. Moments are mutable.
请注意，通过将testDateUtc一个moment对象传递回moment()构造函数，它会创建一个clone。否则，当您调用 时.local()，它也会更改testDateUtc值，而不仅仅是localDate值。时刻是可变的。
Also note that if your original input contains a time zone offset such as +00:00or Z, then you can just parse it directly with moment. You don't need to use .utcor .local. For example:
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，那么您可以直接使用moment. 您不需要使用.utc或.local。例如：
var localDate = moment("2015-01-30T10:00:00Z");
回答by AndrewHenderson
var dateFormat = 'YYYY-DD-MM HH:mm:ss';
var testDateUtc = moment.utc('2015-01-30 10:00:00');
var localDate = testDateUtc.local();
console.log(localDate.format(dateFormat)); // 2015-30-01 02:00:00
- Define your date format.
- Create a moment object and set the UTC flag to true on the object.
- Create a localized moment object converted from the original moment object.
- Return a formatted string from the localized moment object.
- 定义日期格式。
- 创建一个 moment 对象并将对象上的 UTC 标志设置为 true。
- 创建从原始力矩对象转换而来的局部力矩对象。
- 从本地化的矩对象返回格式化的字符串。
回答by sayan
Here's what I did:
这是我所做的：
var timestamp = moment.unix({{ time }});
var utcOffset = moment().utcOffset();
var local_time = timestamp.add(utcOffset, "minutes");
var dateString = local_time.fromNow();
Where {{ time }}is the utc timestamp.
{{ time }}UTC 时间戳在哪里。
回答by Alexey Ryazhskikh
Use utcOffset function.
使用 utcOffset 函数。
var testDateUtc = moment.utc("2015-01-30 10:00:00");
var localDate = moment(testDateUtc).utcOffset(10 * 60); //set timezone offset in minutes
console.log(localDate.format()); //2015-01-30T20:00:00+10:00
