Question

I have looked for hours on the web with no luck!

I have 40 Check boxes, one check box must be checked at all times. Here’s the twist, that one check box must be any one of the 40.

I know how to target just one single button…this is not the goal. The user must be able to choose which one is to remain active.

      $(document).ready(function() {
      $('#W_E-helpPage01').click(function() {
         return false;

As for form validation that’s not the ticket either. As this needs to be dynamic, it must prevent the user from deselecting all but one check box.

Example:
If 30 where to be check, and the user decided to uncheck all 30 he can not do this. As the rule is there must always be at-less one check, it doesn’t matter which one but it must be random.

Any help would be greatly appreciated.

Thanks,
Ricky

Answer 1

This code will stop the user from unchecking the last checked checkbox:

$('input:checkbox').on('click', function() {    
    if ($('input:checkbox:checked').length == 0) {
        return false;
    }
});​

It checks to see if this click results in there being no checked check boxes and cancels the click if that is true.

http://jsfiddle.net/BQCK3/