jQuery $.post not returning data

Cuonic

I’m using $.post to send a form via ajax to a PHP page, which returns JSON data. Once upon a time, it worked perfectly, and the function(data) executed as normal. Somehow, I’ve broke it, and now it doesn’t even touch the function(data). I’ve tried undoing most of what I’ve done, but I still can’t find the problem.

Here’s the script :

$("#modifyhome").submit(function(event) {
    if($("#modifyhome").valid()) {  
        event.preventDefault();

        var $form = $( this ),
            title = $form.find('input[name="title"]').val(),
            content = $form.find('textarea[name="content"]').val();

        $.post("?action=page-accueil", {"title": title, "content": content},
            function(data) {            
                if(data['error'] == 1)
                {           
                    $().message(data['message']);
                    $("div.jquery-message").effect("shake", {times: 3}, 900);
                }
                else if(data['error'] == 0)
                {           
                    $().message(data['message']);
                    $("div.jquery-message").effect("bounce", {times: 3}, 900);
                }
                else
                {           
                    $().message("Erreur de connexion au serveur : veuillez réessayer.");
                    $("div.jquery-message").effect("shake", {times: 3}, 900);
                }
            }, "json"
        );
    }
    else
    {
        $("[id^=qtip-]").effect("pulsate", {times: 3}, 600);
        return false;
    }
});

And here is what the PHP page (?action=page-accueil) returns :

{"error":0,"message":"Page modifiée."}

That all checks out as valid JSON, but it’s as if jQuery doesn’t recognize it for some reason. Any help is greatly appreciated 🙂