simple date passing in querystring

[stijn0713]

the ultimate goal is to let the user select to date range (begin date in DD-MM and enddate in DD-MM), pass this through php file with ajax and query it against the registered date (stored as a datetime),

 

however i'm already running problems catching the values of minDate and maxDate. Can sombody tell me what's wrong please?

 

if (document.getElementById('brdat_dag').value != ''){
var minDag = document.getElementById('brdat_dag').value;}
if (document.getElementById('brdat_maand').value != ''){
var minMaand = document.getElementById('brdat_maand').value; }
var minDate = date ('Y-m-d H:i:s', mktime (0,0,0,minMaand,minDag.value,date('Y', time())));

var queryString = "?postcode=" + postcode + "&provincie=" + provincie + "&aland=" + aland + "&gland=" +gland +"&minAge=" + minAge +"&maxAge=" + maxAge + "&sex=" + sex; + [color=red]"&minDatum=" + minDatum;[/color]