JSFiddle - React, Tailwind, and code Playground

HTML

<div class="milestones-chain">Milestones Chain</div>

JavaScript

$(function () {
                $('.milestones-chain').on('setData', function (e, k, v) {
                    alert('[CHANGED] ' + k + ' : ' + v);
                });
                
                $('.milestones-chain')
                    .data('expertizes', '12345');
            });