isoformat gives a date and returns the shortest ISO 8601 UTC equivalent string. iso format is a date format JavaScript library that helps convert any date object into the shortest string equivalent to ISO 8601 UTC.

Must Read: A Lightweight Date & Time Manipulation JavaScript Library | dayjs

# NPM
$ npm i isoformat

import format from "isoformat";

<script type="module">
  import format from './src/index.js';
</script>

const myValue = format(new Date(Date.UTC(2021, 3, 23, 12, 38)))
=> 2021-04-23T12:38Z

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This superior jQuery/javascript plugin is developed by mbostock. For extra Advanced Usage, please go to the official website.