Retrieve Formatted items individual items of Date in JavaScript. (ECMAScript Internationalization API (ECMA-402))

DateLocaleOptions.js

// Reference for Locale String options: https://tc39.es/ecma402/#sec-datetimeformat-abstracts

// MDN: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toLocaleString,
//      https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/DateTimeFormat

// ISO or JSON date string conversion
var d = new Date('2020-07-17T05:01:16.759Z')

// partial ISO string also allowed
var d1 = new Date('2020-07-17T05:01')

// Locale String conversion with options specified in ECMA-402 standard API

let options = { year: 'numeric', month: 'short', day: '2-digit' };
console.log(d1.toLocaleString('default', options));
// Output: Jul 17, 2020

// use language code instead of default
console.log(d1.toLocaleString('en-IN', options));
// Output: 17-Jul-2020

// use Intl.DateTimeFormat for I18N. Similar to specifying language in locale string
console.log(new Intl.DateTimeFormat('en-IN', options).format(d1));
// Output: 17-Jul-2020

// Change month option from 'short' to 'narrow' that will give just initials instead of 3-char representation of month.
options.month = "narrow";
console.log(new Intl.DateTimeFormat('en-IN', options).format(d1));
// Output: 17-J-2020

// Note: Same output if '.toLocaleString()' is used.