JSFiddle - React, Tailwind, and code Playground

HTML

<div class="parent1">
    <div class="child1">Child1</div>
    <div class="child2">Child2</div>
    <div class="child3"></div>
</div>

<div class="parent2">
    <div class="child1">Child1</div>
    <div class="child2">Child2</div>
</div>

JavaScript

alert($(".parent1").find(".child3").text());
alert($(".parent2").find(".child3").text());