JSFiddle - React, Tailwind, and code Playground

HTML

<div id="display">
</div>
<div id="display1">
</div>

JavaScript

var w = "11-01-2018";

var myDate1 = new Date(w);

var lastDayYear1 =  w.getFullYear(); // year
var lastDayMonth1 = w.getMonth(); // month
document.getElementById("display").innerHTML = myDate1 ;

var DateVar = w.split("-");
var lastDayYear =  w.getFullYear(); // year
var lastDayMonth = w.getMonth(); // month
var myDate = new Date(DateVar[1] + "/" + DateVar[0] + "/" + DateVar[2]);
document.getElementById("display1").innerHTML = lastDayYear;