JSFiddle - React, Tailwind, and code Playground

by Alex

HTML

<div class="teste"></div>

CSS

.teste {
    height:2500px;
}

JavaScript

var topo = 0;
$(window).scroll(function(){
    if($(this).scrollTop() >= 600){
        if(topo == 0){
            alert('huehue br br');
            topo = 1;
        }
    }
});