JSFiddle - React, Tailwind, and code Playground

JavaScript

var str = "2017-11-22"; // this would be your date
var res = str.split("-"); // turn the date into a list format (Split by / if needed)
var months = ["Jan", "Feb", "March", "April", "May", "June", "July", 
    "August", "September", "October", "November", "December"]; // empty first value because it starts at 0
document.write(months[res[1]-1]) // month name