JSFiddle - React, Tailwind, and code Playground

HTML

<div class="sampleAddress">
    <ul>
        <li>foo</li>
        <li>foo</li>
        <li>foo</li>
        <li>foo</li>
        <li>foo</li>
    </ul>
    
</div>

JavaScript

var list = $(".sampleAddress li");
    $(list.get().reverse()).each(function(key){
        if(key+1 == list.length){
            //end of list
        }
    });