jQuery Checkboxes

Question

I\'m trying to write a piece of jQuery code where, if all checkboxes are \"unchecked\", then all li tags have the class \"disabled.\"

But, if one checkbox (any checkbox)

Answer 1

$(':checkbox').click(function () {
    $('li').toggleClass('disabled', !$(':checkbox:checked').length);
});

Answer 2

Slight modification of RaYell's, which will include any dynamically added checkboxes:

$(':checkbox').live('click', function () {
    $('li').toggleClass('disabled', !$(':checkbox:checked').length);
});

Answer 3

$(':checkbox')
    .click(
        function() 
        { 
            $('li').toggleClass('disabled', $(':checkbox :checked').length <= 0));
        }
     );

EDIT: Thanks Ken for pointing out toggleClass method.

Answer 4

I came across this post by accident and I thought I would add my shilling worth:

jQuery(':checkbox').click(function()
{
    if (jQuery(this).is(':checked'))
    {
        alert("Checked");
    }
    else
    {
        alert("Unchecked");
    }
});