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

I would give both (or as many as you like) the same class='chk_option'. If you are using jQuery, then you could do this:

function isSelectedBoth(){
    var result = true;
    $('.chk_option').each(function(){
        if(!$(this).is(':checked'))
            result=false;
    });
    return result;
}

When you are defining the on click events for each simply do this:

$('.chk_option').change(function(e){
    if (isSelectedBoth()){
    // do something if both are selected
        alert('both checkboxes are selected');
    }else{
    // do something if not
        alert('You must select both checkboxes');
    }
});

You can do it even with smarter function then isSelectedBoth() where it could return something more useful then true/false, like order number of un/checked box, an array of elements un/checked etc.