使用 JavaScript 显示特定时区的实时时间

Question

任何人都可以在下面帮助我。我有显示实时时间的 JavaScript 代码，它需要系统当前时间，但我想显示特定时区（亚洲/达卡）的时间。我怎样才能用这段代码做到这一点？function checkTime(i) {  if (i < 10) {    i = "0" + i;  }  return i;}function startTime() {  var today = new Date();  var h = today.getHours();  var m = today.getMinutes();  var s = today.getSeconds();  // add a zero in front of numbers<10  m = checkTime(m);  s = checkTime(s);  document.getElementById('time').innerHTML = h + ":" + m + ":" + s;  t = setTimeout(function() {    startTime()  }, 500);}startTime();

Answer 1

function checkTime(i) {

  if (i < 10) {

    i = "0" + i;

  }

  return i;

}

function startTime() {

  var asiaDhaka = new Date().toLocaleString([], { timeZone: "Asia/Dhaka" });

  var today = new Date(asiaDhaka);

  var h = today.getHours();

  var m = today.getMinutes();

  var s = today.getSeconds();

  // add a zero in front of numbers<10

  var isFormat12H = true;

  var ampm = "";

  if (isFormat12H) {

    ampm = h >= 12 ? "pm" : "am";

    h = h % 12;

    h = h ? h : 12;

  }

  m = checkTime(m);

  s = checkTime(s);

  document.getElementById("time").innerHTML = h + ":" + m + ":" + s + ampm;

  t = setTimeout(function () {

    startTime();

  }, 1000);

}

startTime();

Answer 2

使用Intl.DateTimeFormat API

let options = {

    timeZone: 'Asia/Dhaka',

    year: 'numeric',

    month: 'numeric',

    day: 'numeric',

    hour: 'numeric',

    minute: 'numeric',

    second: 'numeric',

  },

  myDate = new Intl.DateTimeFormat([], options);

setInterval(() => {

  console.log(myDate.format(new Date()));

}, 1000);

您可能需要检查浏览器支持

Answer 3

用这个：

let time = new Date().toLocaleString("en-US", { timeZone: "Asia/Dhaka" });