Send – Serialize form and send extra variables

var data = $('#myform').serializeArray();
data.push({name: 'idnumber', value: idnumber});

$.post("page.php", data);

Basic Version

var formdata = $("#myformaddjob").serialize();
alert(formdata);

$.post("submitjobtodb.php", $("#myformaddjob").serialize(),
function(data) {
alert(data);
}
);


To collect posted fields in PHP use this script.