JSFiddle - React, Tailwind, and code Playground

HTML

<ul id="slider">
    <li>first</li>
    <li>second</li>
    <li>third</li>
  </ul>

JavaScript

(function($){
$.fn.newsSlider = function() {
    var self = this;
    setTimeout(function() {
        self.each( function() {
            $(self).each(function(){
                $(self).append($(self).children(":first-child").clone());
                $(self).children(":first-child").remove();
            });
        });
    }, 1000);
};
}(jQuery));

$(document).ready(function() {
    $("#slider").newsSlider("#slider");
});