validating radio buttons

[sesrikanth]

Initially none of the radio buttons in a from are selected. Though we can pre-select a default radio button, this helps in forcing user to consciously select proper option.

Now how do i check if one of the radio buttons is selected, through validity methods ? If not possible, then i can use jQuery("input:radio").is(":checked"). In that case, I do not know to stop the form from getting submitted.

[sesrikanth]

Hi, found out the solution. assert can be used to check for this. hope this may help some one.
jQuery("input:radio").assert(jQuery("input:radio[name='icecreams']").is(":checked"), "Please select your favorite icecream !");