How do I query a database using AJAX.

[Hypertext]

A perfect example would be Simons "Find a Habbo" function in invent.no-ip.org/hl2/ thanks..

[Zedtu]

Easy way: Scriptaculous.

var handlerFunc = function(t) {
    alert(t.responseText);
}

var errFunc = function(t) {
    alert('Error ' + t.status + ' -- ' + t.statusText);
}

//For an XML response:
var handlerFunc = function(t) {
    var xmlDoc = t.responseXML.documentElement;
    //Handle data.
}

new Ajax.Request('bla.php', {parameters:'thisvar=true&thatvar=Howdy', onSuccess:handlerFunc, onFailure:errFunc});

bla.php just echos out what you want..

You could also change the handlerFunc to

document.getElementById('mydiv').innerHTML = t.responseText;

[Hypertext]

So that would work out as querying it without changing the page as bla.php?q=login&x=anotherparam

?? but I could use like a loading image eg windows live mails