JSFiddle - React, Tailwind, and code Playground

HTML

<div class="castle"></div>
<div class="commercial"></div>
<div class="common"></div>
<div class="cultural"></div>

JavaScript

var obj = {castle: "0", commercial: "3", common: "0", cultural: "2", dioni: "0", holidays: "0", island: "2", nereides: "2", others: "0", peninsula: "0", thetis: "0"}

$("body div").each(function(){
   var array = [] // the reall long array;

   var a = $(this).attr("class").split(' ')[0]; // in case there are two divs, split
 
   $("." + a).text(obj[a] + " hours"); // array.a doesn't work

});