Firefox ignores option selected=“selected”

Question

If you change a dropdown and refresh the page, Firefox seems to ignore the selected attribute.

Answer 1

Try giving the dropdown a name.

Answer 2

For me none of the solutions above worked. I had to explicitly set the selection if none was set:

if (foo.find(':selected').length === 0) {
    $(foo.find('option')[0]).attr('selected', 'selected');
}