JSFiddle - React, Tailwind, and code Playground

by 20yco

HTML

Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />
Lorem<br />
Ipsum<br />
Dolor<br />

<div id="horizontal">test</div>

CSS

#horizontal {
    position: fixed;
    width: 50px;
    background: red;
    left: 0;
    top: 50px;
}

JavaScript

$(document).ready(function () {
    var $horizontal = $('#horizontal');

    $(window).scroll(function () {
        var s = $(this).scrollTop(),
            d = $(document).height(),
            c = $(this).height();

        scrollPercent = (s / (d - c));

        var position = (scrollPercent * ($(document).width() - $horizontal.width()));
        
        $horizontal.css({
            'left': position
        });
    });
});