Get a list of all checked values

Question

I have a bunch of radio boxes on my HTML page. Somewhat like this:

Answer 1

$( '#my-button-id' ).click( function() {
    var tmp = '';
    $( '.custom:checked' ).each( function() {
        // Do what you want...
        tmp += ' ' + $( this ).val();
    });
    alert( tmp );
});