JSFiddle - React, Tailwind, and code Playground

HTML

<div id="NewVistors" class="number count-to" data-from="" data-to="" data-speed="" data-fresh-interval="20"></div>

JavaScript

var div = $('#NewVistors');
div.attr('data-from',0);
div.attr('data-to',20000);
div.attr('data-speed',1000);
div.attr('data-fresh-interval',20);
console.log(div.attr('data-to'));