Detect timezone abbreviation using JavaScript

Question

I need a way to detect the timezone of a given date object. I do NOT want the offset, nor do I want the full timezone name. I need to get the timezone abbreviation.

Answer 1

Using contents from new Date().toString()

const timeZoneAbbreviated = () => {
  const { 1: tz } = new Date().toString().match(/\((.+)\)/);

  // In Chrome browser, new Date().toString() is
  // "Thu Aug 06 2020 16:21:38 GMT+0530 (India Standard Time)"

  // In Safari browser, new Date().toString() is
  // "Thu Aug 06 2020 16:24:03 GMT+0530 (IST)"

  if (tz.includes(" ")) {
    return tz
      .split(" ")
      .map(([first]) => first)
      .join("");
  } else {
    return tz;
  }
};

console.log("Time Zone:", timeZoneAbbreviated());
// IST
// PDT
// CEST