Select multiple ID's - Both checkboxes must be selected

Question

Is there a way for two or more ID\'s be required to be checked before doing something.

For instance:

If BOTH Checkbox 1 and Checkbox 2 are checked then th

Answer 1

var ids = ['#checkbox1', '#checkbox2'],
    $chx = $(ids.join(',')),
    count = $chx.length;

$chx.on('change', function() {
    if ($chx.filter(':checked').length === count) {
        // do stuff
        console.log('all true');
    }
});

If the checkboxes are wrapped by some element:

     one 
     two 

Then the wrapping element can have the event listener:

$('.check-group').each(function() {

    var $this = $(this),
        $chx = $this.find('input[type=checkbox]'),
        count = $chx.length;

    if (count === 0) {
        return;
    }

    $this.on('change', function() {
        if (count === $chx.filter(':checked').length) {
            console.log('all checked');
        }
    });
});