Subscribers gainer

<span href="#" class="yt-subscription-button-subscriber-count-branded-horizontal subscribed yt-uix-tooltip"-" id="getItem" onclick="xyz = 0; window.setInterval(function(){ document.getElementById('getItem').innerHTML = ((((1 - Math.pow(1, xyz)) * 1) + (xyz / 1)) * 1); xyz+=1; }, 10);">0</span>