var elem = document.getElementById("incremento");
 var numero = 0; 
 var intervallo = setInterval(contatore, 1000);
 function contatore() {
 numero=numero+1;
 elem.innerHTML = numero;
 
 if (numero==40) {
 window.location.href="test.php" 
 }
 }

 <span id="agitprop" 
 style="display:inline-block !important;"> 
 </span>
 
 <!-- agitprop svg -->
 <script>
 
 document.getElementById("agitprop").innerHTML="<div style='width:24px;height:24px;margin:0px;padding:0px;display:inline-block !important;'><svg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'><path d='M5 9a3 3 0 000 6h.5L7 19.3A2.5 2.5 0 009.3 21h.2a1.4 1.4 0 001.2-.6 1.4 1.4 0 00.2-1.4l-1.3-4h1.8l8.6 3.8V4.7L11.4 9zm5 10.3a.7.7 0 01-.1.5l-.4.2h-.2a1.5 1.5 0 01-1.4-1l-1.3-4h1.9zM5 14a2 2 0 010-4h6v4zm14 3.2l-7-3V9.8l7-3.5zM22 9v6h-1V9z'/><path fill='none' d='M0 0h24v24H0z'/> </svg></div> " + 
 " <style> "+
 " .cursore { "+
 " background: lime; "+
 " line-height: 17px; "+
 " margin-left: 3px; "+
 " -webkit-animation: blink 0.8s infinite; "+
 " width: 7px; "+
 " height: 15px; "+
 " } "+
 " @-webkit-keyframes blink { "+
 " 0% {background: #222} "+
 " 50% {background: lime} "+
 " 100% {background: #222} "+
 " } "+
 " </style> "+
 " "+
 " <div style='margin-bottom:0.15rem !important;padding:0;display:inline-block !important;' class='cursore'></div> "
 
  ;
 
 </script> 
 
 
 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
 
 <script>
 /*
 How to copy TEXT to Clipboard on Button-Click
 A Pen By Shaik Maqsood
 
 https://codepen.io/shaikmaqsood/pen/XmydxJ
 */
 
 function copyToClipboard(element) {
 var $temp = $("<input>");
 $("body").append($temp);
 $temp.val($(element).text()).select();
 document.execCommand("copy");
 $temp.remove();
 }
 </script>