count of selected radio buttons in jquery

Question

suppose I have groups of radio buttons like so:

 Scaramouche 

         


        

Answer 1

You could do:

 var numberOfCheckedRadio = $('input:radio:checked').length
 //this gives you the total of checked radio buttons on the page

Answer 2

To check for only those specific groups:

$(':radio[name="rdQueen"]:checked, :radio[name="rdFruit"]:checked').length;

Example: http://jsfiddle.net/AlienWebguy/HzfKq/

Answer 3

Use the checked-selector[docs] to get the ones that are checked, and the length[docs] property to find out how many there were.

alert( $('input:radio:checked').length );