Finding all checkboxes are checked in jQuery

Question

I have a collection of checkboxes

 
 
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Answer 1

I think there would be a good feature in jquery an are function:

jQuery.fn.are = function(selector) {
return !!selector && this.filter(selector).length == this.length;
};

Usage:

if($('input.paid[type=checkbox]').are(':checked'))

Example:

http://jsfiddle.net/9s2vA/

I have found this function at http://api.jquery.com/is/ written by Tgr , when I was checking if this exists.

Answer 2

Like this:

if (!$('input.paid[type=checkbox]:not(:checked)').length)
    do('stuff');

This will check if there are any that are unchecked, and do stuff if there aren't (i.e. they are all checked).