Undefined index: Error in ajax POST and/or php script?

Question

I\'m trying to send an ajax POST to a php file, however the php file sends a notice of \"undefined index\", and the php file never seems to receive the value i\'m trying to

Answer 1

Change Ajax syntax...

$.ajax({
    type: "POST",
    url: 'deleteMediaFromDatabase.php',
    data: {'vals' : val},//Have u tried this
    success: function(output) {
        alert(output);
    }
    error: function(request, status, error){
            alert("Error: Could not delete");
    }
);