JSFiddle - React, Tailwind, and code Playground

HTML

<a class="itemClicked" href="#">
    <span>first</span> <span>second</span>
</a>

CSS

.icon-tick
{
    background-color:red;
}

JavaScript

$('.itemClicked').click(function(){
    $(':first-child',this).toggleClass('icon-tick');
});