JSFiddle - React, Tailwind, and code Playground

by zlojnaxa

HTML

<div class="box"></div>

CSS

.box {
    width: 100px;
    height: 2000px;
    background: #ffefef;
}

JavaScript

var res = 0;
$(document).on("scroll",function() {
    if (($(window).scrollTop() > 500) && (typeof res !== 'undefined') && res !== 1) {
        alert(1);
        res = 1;
    }
});