game.innerHTML += ''; let draw = document.getElementById("draw"); let tail = document.createElementNS("http://www.w3.org/2000/svg/", "polygon"); tail.setAttribute('points', '10,10 100,10 55,100'); tail.setAttribute('fill', 'orange'); tail.setAttribute('stroke', 'black'); tail.onclick = function(event) { alert('1'); }; draw.append(tail);