Check all other checkboxes when one is checked

Question

I have a form and group of checkboxes in it. (These checkboxes are dynamically created but I dont think it is important for this question). The code that generates them look

Answer 1

You can use jQuery like so:

jQuery

$('[name="ALL"]:checkbox').change(function () {
   if($(this).attr("checked")) $('input:checkbox').attr('checked','checked');
   else $('input:checkbox').removeAttr('checked');
});

A fiddle.