JSFiddle - React, Tailwind, and code Playground

HTML

<div id="Menu" style="width: 900px; height: 800px; background-color: rgba(0, 255, 255, 0.31); "></div>

JavaScript

var MenuData = [
{'Name':'pictures','x':'30'},
{'Name':'blog','x':'50'},
{'Name':'contact','x':'42'}
]
;  


        var PositionArray = new Array();
        $(document).ready(function () {
            for (var count = 0; count < 1000; count++) {
                $("#Menu").html('');

                        
                setTimeout(function () {
                for (var i in MenuData) {
                        if (PositionArray[i] != null) {
                            PositionArray[i]++;
                        } else {
                            PositionArray[i] = 0;
                        }
                        $("#Menu").append('<div style="position:relative; left:' + MenuData[i].x + 'px; top:' + PositionArray[i] + 'px; ">123</div>');
                    }
                }, 500);

            }
        });