JSFiddle - React, Tailwind, and code Playground
HTML
<div id="first">
<span class="test"></span>
</div>
<div id="second">
<span class="test"></span>
<div>
JavaScript
var $j = jQuery.noConflict();
$j('span.test:first').text('Welcome');
<div id="first">
<span class="test"></span>
</div>
<div id="second">
<span class="test"></span>
<div>
var $j = jQuery.noConflict();
$j('span.test:first').text('Welcome');