JSFiddle - React, Tailwind, and code Playground

HTML

<ul class="menu">
    <li>
        <a href="http://google.com/page.html">asd</a>
    </li>
</ul>
<div class="slide-item">464564</div>

CSS

.slide-item{
    position:absolute;
}

JavaScript

function get_url_param(param, url) {
    param = param.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
    var regexS = "[\\?&]" + param + "=([^&#]*)";
    var regex = new RegExp(regexS);
    var results = regex.exec(url);
    if (results == null) return '';
    else return results[1];
}

$(document).ready(function() {
    $('ul.menu li').click(function() {
        var href = $('a', this).attr('href');
        var content = get_url_param('page', href);
        if (!content) content = 'home';

        $('.slide-item').animate({
            top: '1000px'
        }, 500)

        //$('#content').fadeOut();
        //alert(content);
        return false;
    });
});