[jQuery] Select radio button item

[jQuery] Select radio button item


I have a radio button group with 4 items, each one has a value
(1,2,3,'').
On click in a button of my form I would like the check the radio
button with '' value.
I supose that I can access to the radio group ussing $("@idRaio") but
then I don't know how can access to the item with value=''
Any idea?