Date string that JS understands

This is sort of a PHP question too, as that is where I’m adding the code, but it is to set up for javascript.
Basically I just want to know what format of date string JS will read.
I’m trying to make a simple graph with Highcharts JS, the data comes from an SQL DB Table, two pieces of data, Date and Balance, Date is of course stored in SQL Date format YYYY-MM-DD.
But the script is not reading it right.
I thought YYYY,MM,DD would work, but that confuses the script with the commas when I add to an array.
What’s the simple way to make a string containing a date that JS will read?

Hi Sam,

The following code will convert a MySQL format date into a JS Date object:

var inputDate = '2013-12-24',
    t = inputDate.split('-'),
    myDate = new Date(t[0], t[1]-1, t[2]);

Nevermind, I solved it. It turns out that the Highcharts script wants the date as a timestamp in miliseconds, then you must tell the script that the graph axis is ‘datetime’ and it works.
So for anyone wondering, the PHP is like this:

$finSQL = "SELECT * FROM tablename ORDER BY Date";
	$result = mysql_query($finSQL);
	while ($row = mysql_fetch_array($result)) {
		$date    = strtotime($row['Date']);
		$date    = $date *= 1000 ;
		$balance = $row['Balance'] ;
		$data[] = "[$date, $balance]";
	}

And the JS like this:

<script type="text/javascript">
	var chart = new Highcharts.Chart({
		chart: {
			renderTo: 'container'
		},
		xAxis: {
			type: 'datetime',
		},
		yAxis: {
	           title: {
			           text: 'Balance'
		          }
		},
		series: [{
			name: 'Balance in Pounds',
			data: [<?php echo join($data, ',') ?>]
		}]
	});
</script>