jQuery checkboxes manipulation

Question

Using jQuery, how can I:

1. Have all checkboxes on a page turned checked on or off?

2. Loop through all the checkboxes on the page which are selected. I.e something like this

   $(sel-cboxes).each(myFunction);
   

So myFunction would be called on each selected checkbox.

Thanks in advance!

Answer 1

1: To check all checkboxes

$("input:checkbox").attr('checked', true);

To uncheck all

$("input:checkbox").attr('checked', false);

2:

$("input:checkbox:checked").each(myFunction);