JSFiddle - React, Tailwind, and code Playground

by Christian Mueller

HTML

<div id="result">no result</div>

<div id="valid">no result</div>

JavaScript

$('#result').text("starting!");

var arr = new Array();
arr["US"] = true;
arr["CA"] = true;
arr["UK"] = false;

var ctry = "UK";

if (!arr[ctry]) {
     $('#result').text("Not Valid!");
     var txt = "";
     
     for (var i in arr)
     		if (arr[i])
     		    txt += i + " ";
             
     $('#valid').text(txt);
} else {
     $('#result').text("Valid!");
}