1

1

// Add Shortcode
function voucher() {

	<style> 
	#demo{
	display: none;
	}
	</style> 
	
	<p id="demo"></p>
	
	<script>
	function makeid() {
	  var text = "";
	  var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
	
	  for (var i = 0; i < 8; i++)
	    text += possible.charAt(Math.floor(Math.random() * possible.length));
	
	  return text;
	}
	document.getElementById("demo").innerHTML =
	makeid();
	
	</script>

}
add_shortcode( 'voucher', 'voucher' );