JSFiddle - React, Tailwind, and code Playground
HTML
<div id="a" >
<div id="b">
<div id="c"></div>
</div>
</div>
JavaScript
var w = $('#a #b #c');
console.log( w.length );
<div id="a" >
<div id="b">
<div id="c"></div>
</div>
</div>
var w = $('#a #b #c');
console.log( w.length );