JSFiddle - React, Tailwind, and code Playground

HTML

<li> <a class="siralaMain" catid="7" href="#"> <span>Sahil</span> </a>
    <ul style="display: block;">
        <li> 
            <a class="siralaSec active" catid="300" href="#">Blah</a> 
        </li>
    </ul>
</li>

CSS

.active {
    color: red;
}

JavaScript

$(".siralaSec").click(function() {
    $(this).parents("li:eq(0)").find("a:first").addClass("active");
});