在JavaScript中将日期转换为另一个时区

Question

我正在寻找一个功能,将日期在一个时区转换为另一个时区.

它需要两个参数,

• 日期(格式为"2012/04/10 10:10:30 +0000")
• 时区字符串("亚洲/雅加达")

时区字符串在http://en.wikipedia.org/wiki/Zone.tab中描述

是否有捷径可寻？

Answer 1

对于moment.js用户,您现在可以使用moment-timezone.使用它,你的功能看起来像这样:

function toTimeZone(time, zone) {
    var format = 'YYYY/MM/DD HH:mm:ss ZZ';
    return moment(time, format).tz(zone).format(format);
}

Answer 2

var aestTime = new Date().toLocaleString("en-US", {timeZone: "Australia/Brisbane"});
aestTime = new Date(aestTime);
console.log('AEST time: '+aestTime.toLocaleString())

var asiaTime = new Date().toLocaleString("en-US", {timeZone: "Asia/Shanghai"});
asiaTime = new Date(asiaTime);
console.log('Asia time: '+asiaTime.toLocaleString())

var usaTime = new Date().toLocaleString("en-US", {timeZone: "America/New_York"});
usaTime = new Date(usaTime);
console.log('USA time: '+usaTime.toLocaleString())

var indiaTime = new Date().toLocaleString("en-US", {timeZone: "Asia/Kolkata"});
indiaTime = new Date(indiaTime);
console.log('India time: '+indiaTime.toLocaleString())

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toLocaleString

Answer 3

:从无耻被盗http://www.techrepublic.com/article/convert-the-local-time-to-another-time-zone-with-this-javascript/6016329

/** 
 * function to calculate local time
 * in a different city
 * given the city's UTC offset
 */
function calcTime(city, offset) {

    // create Date object for current location
    var d = new Date();

    // convert to msec
    // add local time zone offset
    // get UTC time in msec
    var utc = d.getTime() + (d.getTimezoneOffset() * 60000);

    // create new Date object for different city
    // using supplied offset
    var nd = new Date(utc + (3600000*offset));

    // return time as a string
    return "The local time in " + city + " is " + nd.toLocaleString();
}

此功能通过提供城市/国家/地区的名称和偏移值来计算时区值

Answer 4

除Safari之外的大多数桌面(非移动)浏览器都支持带参数的toLocaleString函数,旧浏览器通常会忽略这些参数.

new Date().toLocaleString('en-US', { timeZone: 'Asia/Jakarta' })

Answer 5

好的,找到了!

我正在使用timezone-js.这是代码:

var dt = new timezoneJS.Date("2012/04/10 10:10:30 +0000", 'Europe/London');
dt.setTimezone("Asia/Jakarta");

console.debug(dt); //return formatted date-time in asia/jakarta

Answer 6

得到它了 !

想要强制显示的日期=服务器日期,不要使用本地设置(UTC).

我的服务器是GMT-6 - > new Date().getTimezoneOffset()= 360.

myTZO = 360;
myNewDate=new Date(myOldDateObj.getTime() + (60000*(myOldDateObj.getTimezoneOffset()-myTZO)));
alert(myNewDate);

Answer 7

如果您不想导入一些大型库，则可以使用Intl.DateTimeFormat将Date对象转换为不同的时区。

// Specifying timeZone is what causes the conversion, the rest is just formatting
const options = {
  year: '2-digit', month: '2-digit', day: '2-digit',
  hour: '2-digit', minute: '2-digit', second: '2-digit',
  timeZone: 'Asia/Jakarta',
  timeZoneName: 'short'
}
const formater = new Intl.DateTimeFormat('sv-SE', options)
const startingDate = new Date("2012/04/10 10:10:30 +0000")

const dateInNewTimezone = formater.format(startingDate) 
console.log(dateInNewTimezone) // 12-04-10 17:10:30 GMT+7

偏移量，夏时制和过去的更改将为您解决。

Answer 8

您可以使用 toLocaleString() 方法来设置时区。

new Date().toLocaleString('en-US', { timeZone: 'Indian/Christmas' })

对于印度，您可以使用“Indian/Christmas”，以下是不同的时区，

"Antarctica/Davis",
    "Asia/Bangkok",
    "Asia/Hovd",
    "Asia/Jakarta",
    "Asia/Phnom_Penh",
    "Asia/Pontianak",
    "Asia/Saigon",
    "Asia/Vientiane",
    "Etc/GMT-7",
    "Indian/Christmas"