使用创建时区的偏移量初始化Moment [英] Initialize a Moment with the timezone offset that I created it with

问题描述

我在javascript中使用了矩和矩时区，而这部分是我见过的最不直观的API之一.

I'm using moment and moment-timezone in javascript, and this part of it is one of the most unintuitive API's I've ever seen.

我希望:

moment("2015-12-14T04:00:00Z").utcOffset()

将是一个纯函数，并返回参数中包含的偏移量，该偏移量为0.但是相反，它隐式将其转换为我的本地时区偏移量(PST)，因此返回-480，为什么?我问我刚刚创建的对象有什么偏移量，而不是我当前所在的偏移量.这就像我编写了一个api，在其中调用User.find(123).name()返回您的姓名而不是用户名123.

would be a pure function and return the offset included in the argument, which is 0. But instead it implicitly converts it to my local timezone offset (PST), so this returns -480 Why?? I asked what offset the object i just created has, not what offset I'm currently in. It would be like if I wrote an api where calling User.find(123).name() returns your name instead of the name of user 123.

无论如何，我可以做

moment("2015-12-14T04:00:00Z").tz("utc").utcOffset()

但是我的日期时间字符串是动态的，所以我不知道时区.

But my datetime string is dynamic, so I don't know the timezone.

如何获得我所期望的行为，即js中的一瞬间，该瞬间位于我传入的字符串中所包含的时区偏移中?

How can I get the behavior I expected, a Moment in js that is in the timezone offset included in the string i passed in?

推荐答案

使用parseZone保留传入的偏移量.

Use parseZone to keep the offset as it was passed in.

moment.parseZone("2015-12-14T04:00:00Z")

关于为什么?"问题的一部分:

As to the "why?" part of your question:

• moment(...)是本地模式.歧义输入(无偏移)被假定为本地时间.明确的输入(具有偏移量)已根据当地时间进行了调整.
• moment.utc(...)是utc模式.歧义输入假定为UTC.明确的输入已调整至UTC.
• moment.parseZone()保持输入区域通过.如果输入不明确，则与本地模式相同.
带有moment-timezone插件的
• moment.tz(...)可以解析特定时区的输入.

• moment(...) is local mode. Ambiguous input (without offset) is assumed to be local time. Unambiguous input (with offset) is adjusted to local time.
• moment.utc(...) is utc mode. Ambiguous input is assumed to be UTC. Unambiguous input is adjusted to UTC.
• moment.parseZone() keep the input zone passed in. If the input is ambiguous, it is the same as local mode.
• moment.tz(...) with the moment-timezone plugin can parse input in a specific time zone.

请记住，这一时刻必须应对各种各样的输入.

Keep in mind that moment has to contend with a wide variety of inputs.

还请记住，时区和时区偏移是两件事.偏移量-08:00不一定表示您在美国太平洋时区.

Also keep in mind that a time zone and a time zone offset are two different things. An offset of -08:00 doesn't necessarily mean you are in the US Pacific time zone.

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