Home Date & Time A Fast, Lightweight Library to Translate Between Time Zones and UTC | xtz.js

A Fast, Lightweight Library to Translate Between Time Zones and UTC | xtz.js

Date & Time webcodeflow · February 4, 2022 · Comments off

xtz.js is a fast, lightweight, dependency-free library for translation between timezones and UTC with the native Intl.DateTimeFormat format at ~100 LoC. For Node.js and browsers.

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How to make use of it:

1. Insert the JavaScript xtz.js into the HTML doc.

<script src="./xtz.js"></script>

2. Initialize.

var XTZ = window.XTZ;

3. Convert Relative TimeZone to Absolute UTC.

// toUTC(dtString, timeZone)
XTZ.toUTC("2021-06-03 12:52:46.007", "Asia/Shanghai")
   .toISOString()
// => 2021-06-03T12:52:46.007+0800

// OR 
// toUTCISOString(dtString, timeZone)
XTZ.toUTCISOString("2021-06-03 12:52:46.007", "Asia/Shanghai")
// => 2021-06-03T12:52:46.007+0800

4. Convert Absolute UTC to Relative TimeZone.

// toTimeZone(utcDate, timeZone)
XTZ.toTimeZone("2021-06-03T04:50:36.715Z", "Asia/Shanghai")
  .toISOString()
// => 2021-06-03T12:50:36.715+0800

// OR 
// toTimeZoneISOString(isoString, timeZone)
XTZ.toTimeZoneISOString("2021-06-03T04:50:36.715Z", "Asia/Shanghai")
// => 2021-06-03T12:50:36.715+0800

Time Zones And UTC Converter, xtz.js Plugin/Github