JSFiddle - React, Tailwind, and code Playground

HTML

<div class="first">
        <div class="second">
            <div class="third">小王</div>
        </div>
    </div>

    <div class="first">
        <div class="second">
            <div class="third">bsl</div>
        </div>
    </div>

Preact

$(function(){
	$('.first .third').each(function(i){
  	$(this).text(i);
	})
});