jQuery - ensuring all radio groups are checked

Question

I\'d like to loop through multiple (dynamic) radio button groups using jQuery, and if any haven\'t had a selection made, it throws up an error and stops the form submission.

Answer 1

Try this. The approach is to loop through ALL radio buttons, and THEN extract the name of the radio button group, using :checked to see if any member of that group is checked. A simple Boolean stops the errors after the first missing check is found.

$("form").submit(function() {
    var submitme = true;
    $(':radio').each(function() { // loop through each radio button
        nam = $(this).attr('name'); // get the name of its set
        if (submitme && !$(':radio[name="'+nam+'"]:checked').length) { 
        // see if any button in the set is checked
            alert(nam+' group not checked');
            submitme = false;
        }
    });
    return submitme; // cancel the form submit
});        ​

http://jsfiddle.net/mblase75/aVVW9/5/