Write code in the editor and click
<script src='https://joelgrayson.com/software/notificationer/notificationer-v3.js'></script>
<script>
nf.notify('Hello world');
nf.notify('Success', 'lightgreen');
nf.notify('Confirmation required <button>confirm</button>', 'rgb(255, 50, 80)');
</script>