JSFiddle - React, Tailwind, and code Playground

HTML

<body>
<div class="1">1</div>
<div>2</div>
<div class="3">3</div>
<div>4</div>
<div>5</div>
<div>6</div>
<div>7</div>

<div class="1">1</div>
<div>2</div>
<div class="3">3</div>
<div>4</div>
<div>5</div>
<div>6</div>
<div>7</div>
</body>

JavaScript

$(document).ready(function() {
    $(".1").click(function() {
         console.log("click");
        $(this).nextAll(".3:first").css("color", "red");
    });
});