JSFiddle - React, Tailwind, and code Playground

HTML

<div class="ProductActionAdd">
    <input type="text" value="" id="test1"/>
    <a class="button" href="#">Add To Cart</a>
</div>
<div class="ProductActionAdd">
    <input type="text" value="" id="test2"/>
    <a class="button" href="#">Add To Cart</a>
</div>
<div class="ProductActionAdd">
    <input type="text" value="" id="test3"/>
    <a class="button" href="#">Add To Cart</a>
</div>

JavaScript

$(".ProductActionAdd a").click(function(){
    alert($(this).closest('div').find('input').attr('id'));
})