When I used the jquery 1.4 and jquery-compact-1.3 (http://github.com/jquery/jquery-compat-1.3). I found:

$('#div-a, #div-b').click(function() { alert('foo'); }

The multi-selector cannot work correctly.

I check the jquery-compact-1.3, line 125-138,

// jQuery() now returns an empty jQuery set, not jQuery(document)

var oldinit = jQuery.fn.init;

jQuery.fn.init = function( selector ) {

if ( selector === undefined ) {

return jQuery( document );

}

oldinit.apply( this, arguments );

return this;

};

jQuery.fn.init.prototype = oldinit.prototype;

There is the reason why multi-selector cannot work, but I have no idea how to fix it?