Radio buttons not checked in jQuery

I have this line of code for page load:

if ($("input").is(':checked')) {

and it works fine when the radio button input is checked. However, I want the opposite. Something along the lines of

if ($("input").not(.is(':checked'))) {

so that my if statement runs when none of the radiobuttons are selected. What is the best way to go about this?

From stackoverflow

• if ( ! $("input").is(':checked') )
  

  Doesn't work?

  You might also try iterating over the elements like so:

  var iz_checked = true;
  $('input').each(function(){
     iz_checked = iz_checked && $(this).is(':checked');
  });
  if ( ! iz_checked )
  

  Nathan Long : You might also filter that list by the name attribute this group of radio buttons share.

• if ($("input").is(":not(:checked)"))
  

  AFAIK, this should work, tested against the latest stable jQuery (1.2.6).

• If my firebug profiler work fine (and i know how to use it well), this:

  $('#communitymode').attr('checked')
  

  is faster than

  $('#communitymode').is('checked')
  

  You can try on this page :)

  And then you can use it like

  if($('#communitymode').attr('checked')===true) { 
  // do something
  }
  

• $("input").is(":not(':checked')"))
  

  This is jquery 1.3, mind the ' and " signs!

• $('input:radio[checked=false]');

  this will also work

  input:radio:not(:checked)

  or

  :radio:not(:checked)

  Antwan : This will work for sure. Took me a while to figure out. It's the most elegant you can get without writing any code.