JSFiddle - React, Tailwind, and code Playground

HTML

<span id="one">one</span>
<span id="two">two</span>
<span id="three">three</span>

JavaScript

if (isset($("#one"))){
   alert('yes');
}

if (isset($("#two"))){
   alert('yes');
}

if (isset($("#three"))){
   alert('yes');
}

if (!isset($("#four"))){
   alert('no');
}