JSFiddle - React, Tailwind, and code Playground

HTML

<div id="title">strings.title</div>
<div id="subtitle">strings.subtitle</div>

JavaScript

var LanguageStorage = {
  strings: {
    title: "Title",
    subtitle: "Subtitle"
  }
}
    
function placeLanguageFor(selector) {
  var thiz = $(selector);
  var lidArray = thiz.text().split("\.");
  thiz.text(LanguageStorage[lidArray[0]][lidArray[1]]);
}

placeLanguageFor("#title");
placeLanguageFor("#subtitle");