how to know the timezone name from utc time offset in javascript

问题

How to know the timezone name from UTC offset in Javascript.

I have UTC offset, say

UTC+5:30, 

I need to know where this timezone location is, like I want to get 'Asia/Calcutta'.

If I give 'UTC+9' , then I need to get Asia/Tokyo

How to do this in Javascript?

回答1:

You should be able to get that using Intl API. You can find the demo at https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DateTimeFormat/resolvedOptions

回答2:

You can try that:

console.log(Intl.DateTimeFormat().resolvedOptions().timeZone)

来源：https://stackoverflow.com/questions/54473715/how-to-know-the-timezone-name-from-utc-time-offset-in-javascript