save a JavaScript variable into a PJP session

[NZ_Kiwis]

How can I save GameDate into $_SESSION['GameDate'] each time it loops??

<script type="text/javascript">

var GameDate = new Date("October 13, 1975 11:13:00"); 

function GameTimerInterval(){
	document.getElementById("demo").innerHTML = GameDate; 

GameDate.setMonth(GameDate.getMonth()+1); 
document.getElementById("demo").innerHTML = GameDate.toDateString();


setTimeout('GameTimerInterval()', 10000);
}

</script>

[bradgrafelman]

Use jQuery (or similar) to send an AJAX request to a PHP script, passing in whatever value(s) you wish to store via whatever method (GET/POST) you wish to use.