What is the correct syntax to return div without an id using jQuery?

Question

I'm using jQuery 1.3.1 and when I try to loop through a form and remove any div w/out an id i get an exception.

uncaught exception: Syntax error, unrecognized expression: [@id]

$('form:eq(1)').children().each(
        function()
        {
            this2 = this;
            if ($(this2).find('div').not('[@id]')) { $(this).remove(); }
        }
    );

Answer 1

The @ operator has been deprecated for a while and finally removed in version 1.3. Just remove it from the attribute declaration:

.not('[id]')...

EDIT: The following should do what you stated, as opposed to your original code:

if($(form).find('div').filter(function(){ 
     return $(this).attr('id') == '';
}).remove();