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
使用luxon库:
import { DateTime } from "luxon";
// Convert function:
const convertTz = (datetime, fromTz, toTz, format='yyyy-MM-dd HH:mm:ss') => {
return DateTime.fromFormat(datetime, format, { zone: fromTz }).setZone(toTz).toFormat(format);
}
// Use it like this:
console.log(convertTz('2021-10-03 19:00:00', 'Europe/Lisbon', 'America/New_York'));
其他回答
无耻地窃取自: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();
// get UTC time in msec
var utc = d.getTime();
// 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();
}
这个函数通过提供城市/国家的名称和偏移值来计算时区值
使用luxon库:
import { DateTime } from "luxon";
// Convert function:
const convertTz = (datetime, fromTz, toTz, format='yyyy-MM-dd HH:mm:ss') => {
return DateTime.fromFormat(datetime, format, { zone: fromTz }).setZone(toTz).toFormat(format);
}
// Use it like this:
console.log(convertTz('2021-10-03 19:00:00', 'Europe/Lisbon', 'America/New_York'));
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`
);
大多数浏览器都支持带参数的toLocaleString函数，旧的浏览器通常会忽略这些参数。
const str = new Date()。toLocaleString('en-US'， {timeZone: '亚洲/雅加达'}); console.log (str);
这对每个人都适用。您可以通过手动更改机器上的时间来测试不同的时区。这个函数将相应地进行调整。
function getCurrentTime() {
const d = new Date() //2022-07-22T16:27:21.322Z
const t = d.getTime(); //d in milliseconds 1658507241322
const offset = -d.getTimezoneOffset()/60 //current offset in hours -4
const curretMilli = t + (offset * 3600000) //cuuret local time milliseconds need to convert offset to milliseconds
return new Date(curretMilli) //converts current local time in milliseconds to a Date //2022-07-22T12:27:21.322Z
}
