我正在寻找一个函数转换日期在一个时区到另一个。
它需要两个参数，
日期(格式为“2012/04/10 10:10:30 +0000”) 时区字符串("Asia/Jakarta")
时区字符串在http://en.wikipedia.org/wiki/Zone.tab中描述
有什么简单的方法吗?
当前回答
你也可以使用 https://www.npmjs.com/package/ctoc_timezone
它有很多简单的实现和格式定制。
更改toTimeZone格式:
中华奥。toTimeZone(new Date()，"EST"，"Do MMM YYYY hh:mm:ss #{EST}");
输出:
2013年2月28日19:00:00 EST
您可以在文档中探索多种功能。
其他回答
这是我的代码，它工作得很完美，你可以试试下面的演示:
$(document).ready(function() { //EST setInterval( function() { var estTime = new Date(); var currentDateTimeCentralTimeZone = new Date(estTime.toLocaleString('en-US', { timeZone: 'America/Chicago' })); var seconds = currentDateTimeCentralTimeZone.getSeconds(); var minutes = currentDateTimeCentralTimeZone.getMinutes(); var hours = currentDateTimeCentralTimeZone.getHours()+1;//new Date().getHours(); var am_pm = currentDateTimeCentralTimeZone.getHours() >= 12 ? "PM" : "AM"; if (hours < 10){ hours = "0" + hours; } if (minutes < 10){ minutes = "0" + minutes; } if (seconds < 10){ seconds = "0" + seconds; } var mid='PM'; if(hours==0){ //At 00 hours we need to show 12 am hours=12; } else if(hours>12) { hours=hours%12; mid='AM'; } var x3 = hours+':'+minutes+':'+seconds +' '+am_pm // Add a leading zero to seconds value $("#sec").html(x3); },1000); }); <!DOCTYPE html> <html> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> </head> <body> <p class="date_time"><strong id="sec"></strong></p> </body> </html>
如果你不想导入一些大的库，你可以使用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 formatter = new Intl.DateTimeFormat('sv-SE', options) const startingDate = new Date("2012/04/10 10:10:30 +0000") const dateInNewTimezone = formatter.format(startingDate) console.log(dateInNewTimezone) // 12-04-10 17:10:30 GMT+7
补偿，夏令时，和过去的变化将为您照顾。
更新
还有一个新的时态工具，可以处理时区和其他事情。比如只有日期或时间。目前还处于试验阶段
这是为了取代旧的遗产日期
var isoDate = new Date().toJSON() // eg: '2022-11-18T13:56:09.697Z'
Temporal.Instant.from(isoDate).toZonedDateTimeISO('Europe/Stockholm')
如果你有一个时区偏移，你可以使用这个:
const timezoneDate = (timestamp: number, offsetInHours: number) => {
const shiftedTimestam = timestamp + offsetInHours * 3600000;
const shiftedDate = new Date(shiftedTimestam);
return {
date: shiftedDate.getUTCDate(),
hours: shiftedDate.getUTCHours(),
minutes: shiftedDate.getUTCMinutes(),
// ...other UTC methods
}
};
// Usage:
const newYorkDate = timezoneDate(Date.now(), -5);
console.log(
`It is ${newYorkDate.hours}:${newYorkDate.minutes} in NYC`
);
只需设置你想要的国家时区，你可以很容易地在html中显示它更新使用setinterval()函数后每一分钟。函数formatAMPM()管理12小时格式和AM/PM时间显示。
$(document).ready(function(){
var pakTime = new Date().toLocaleString("en-US", {timeZone: "Asia/Karachi"});
pakTime = new Date(pakTime);
var libyaTime = new Date().toLocaleString("en-US", {timeZone: "Africa/Tripoli"});
libyaTime = new Date(libyaTime);
document.getElementById("pak").innerHTML = "PAK "+formatAMPM(pakTime);
document.getElementById("ly").innerHTML = "LY " +formatAMPM(libyaTime);
setInterval(function(today) {
var pakTime = new Date().toLocaleString("en-US", {timeZone: "Asia/Karachi"});
pakTime = new Date(pakTime);
var libyaTime = new Date().toLocaleString("en-US", {timeZone: "Africa/Tripoli"});
libyaTime = new Date(libyaTime);
document.getElementById("pak").innerHTML = "PAK "+formatAMPM(pakTime);
document.getElementById("ly").innerHTML = "LY " +formatAMPM(libyaTime);
},10000);
function formatAMPM(date) {
var hours = date.getHours();
var minutes = date.getMinutes();
var ampm = hours >= 12 ? 'pm' : 'am';
hours = hours % 12;
hours = hours ? hours : 12; // the hour '0' should be '12'
minutes = minutes < 10 ? '0'+minutes : minutes;
var strTime = hours + ':' + minutes + ' ' + ampm;
return strTime;
}
});
我最近在Typescript中做了这个:
// fromTimezone example : Europe/Paris, toTimezone example: Europe/London
private calcTime( fromTimezone: string, toTimezone: string, dateFromTimezone: Date ): Date {
const dateToGetOffset = new Date( 2018, 5, 1, 12 );
const fromTimeString = dateToGetOffset.toLocaleTimeString( "en-UK", { timeZone: fromTimezone, hour12: false } );
const toTimeString = dateToGetOffset.toLocaleTimeString( "en-UK", { timeZone: toTimezone, hour12: false } );
const fromTimeHours: number = parseInt( fromTimeString.substr( 0, 2 ), 10 );
const toTimeHours: number = parseInt( toTimeString.substr( 0, 2 ), 10 );
const offset: number = fromTimeHours - toTimeHours;
// convert to msec
// add local time zone offset
// get UTC time in msec
const dateFromTimezoneUTC = Date.UTC( dateFromTimezone.getUTCFullYear(),
dateFromTimezone.getUTCMonth(),
dateFromTimezone.getUTCDate(),
dateFromTimezone.getUTCHours(),
dateFromTimezone.getUTCMinutes(),
dateFromTimezone.getUTCSeconds(),
);
// create new Date object for different city
// using supplied offset
const dateUTC = new Date( dateFromTimezoneUTC + ( 3600000 * offset ) );
// return time as a string
return dateUTC;
}
我使用“en-UK”格式，因为它是一个简单的。可能是"en-US"之类的。
如果第一个参数是本地时区，第二个参数是目标时区，它将返回一个具有正确偏移量的Date对象。
