JSFiddle - React, Tailwind, and code Playground
HTML
<div class="objectA" style="display:none">A1</div>
<div class="objectB" style="display:none">B1</div>
<div class="objectA" style="display:none">A2</div>
<div class="objectB" style="display:none">B2</div>
JavaScript
$(document).ready(function(){
var allObjects = $("div[class^='object']");
$(allObjects[1]).fadeIn();
})