JSFiddle - React, Tailwind, and code Playground

HTML

<ul id="sortable">
    <li data-name="name1">test1</li>
    <li data-name="name2">test2</li>
    <li data-name="name3">test3</li>
</ul>

JavaScript

$("#sortable").sortable({ 
        axis: 'y',
        stop: function(evt, ui){
            console.log($("#sortable").sortable('toArray', { attribute: 'data-name' }));
        }
    });