<html>
<button id="myDIV" onclick="myFunction()">π€</button>
<script>
function myFunction() {
var x = document.getElementById("myDIV");
if (x.innerHTML === "π€") {
x.innerHTML = "β€οΈ";
} else {
x.innerHTML = "π€";
}
}
</script>
<style>
button {
border: none;
background: center;
height: 0px;
width: 0px;
background: none;
}
</style>
</html>