JAVASCRIPT

javascript month name

let date = new Date(2020, 05, 21); // 2020-06-21
let longMonth = date.toLocaleString('en-us', { month: 'long' }); /* June */
let shortMonth = date.toLocaleString('en-us', { month: 'short' }); /* Jun */
let narrowMonth = date.toLocaleString('en-us', { month: 'narrow' }); /* J */

convert month name to month number in js

month1 = month1.toLowerCase();
var months = ["jan", "feb", "mar", "apr", "may", "jun", "jul", "aug", "sep", "oct", "nov", "dec"];
month1 = months.indexOf(month1);