When offset() is used as a setter, passed a function, it's supposed to pass the index of the current element in the JQ collection as the first parameter to that function. But it seems to always pass 0.

In this code:

$('div').each(function() {

$(this).offset(function(index, coord) {

$(this).append($("<p>index:" + index + "<\\/p>"));

});

});

each DIV has appended: "<p>index: 0</p>"

There is a test case at http://scott.sauyet.com/Javascript/Demo/2010-03-19a/ and the discussion which lead to the discovery at http://forum.jquery.com/topic/offset-index-coord .