Trouble building a dynamic data key

[neophyte]

Hello All -

I want to dynamically build the parameters for the data key of an ajax call but I can't get it to won't work.

I've check my results with alert() and everything looks perfect but it still won't work.

Is it the way I'm quoting the different elements in the datalist?

Can someone see where I'm going wrong?

++++++++++++++++++++++++++++++++++++++++++++

function ajaxAction(vars)
{
var id = vars[0];
var table = vars[1];
var category = vars[2];
var action = vars[3];

var dataList = x = null;

x = 'action: ' + action + ', ';
x += 'rowid: ' + id + ', ';
x += 'table: ' + table + ', ';
x += 'category: ' + category;

dataList = '{ ' + x + ' }';

alert(dataList);
// the alert shown is correct:
//{ action: Delete, rowid: 20, table: tbl_attack_log, category: Guestbook }

$.ajax({
type: "POST",
url: "assets/ajax/backend_action.php",
data: dataList,
dataType: "json",
success: function(data) {
afterAction(data);
}
});
}

[Fotiman]

Anything that is string data, you would want to wrap in quotes. For example:
x = 'action: "' + action + '", ';
x += 'rowid: ' + id + ', ';
x += 'table: "' + table + '", ';
x += 'category: "' + category + '"';

Note, you may want to scrub those variables first to make sure none of them contain quotes.

[neophyte]

Thanks very much Fotiman

[Fotiman]

To expand on what I said, you might want to use mysql_real_escape_string.