JSFiddle - React, Tailwind, and code Playground

HTML

<div>a</div>
<div>b</div>
<div>c</div>

JavaScript

var check;

check = $('div:first').is(':first');
alert(check);
    
check = $('div:first').is('div:first');
alert(check);
   
check = $('div:last').is(':last');
alert(check);