JSFiddle - React, Tailwind, and code Playground

HTML

<html>
    <head>
     <script language="javascript" type="text/javascript">
     
     		var d = [1,2,3,4,5,6,7,8,9];
        //var d=new Array();
        //d[0]="One";
        //d[1]="Two";
        //d[2]="Three";
        //d[3]="Four";
        //d[4]="Five";

        var i=8; //card length

        var myTimer =setInterval(timer,1000); //1000 will  run it every 1 second

        function timer() {
            document.getElementById("timer").innerHTML = d[i];
            i--;
            if (i < 0){
                clearInterval(myTimer);
            }
        }
     </script>
     </head>
     <body>
        <h1>
            <p id="timer"></p>
        </h1>
     </body>
     </html>