ajax with radio buttons

Normally when I have an imput I use this syntax:

 ensino: $('#amount').val()

开发者_JS百科But now I have a group of radio buttons:

<input type="radio" id="radio1" name="radios" value="1"> 
<label for="radio1">Politécnico</label> 
<input type="radio" id="radio2" name="radios" value="2"> 
<label for="radio2">Universitário</label> 
<input type="radio" id="radio3" name="radios" value="3"> 
<label for="radio3">Profissional</label>
<input type="radio" id="radio4" name="radios" value="4"> 
<label for="radio4">Outro</label> 

How can I do an Ajax post? In this case, I can't use the id, correct?

Thanks.

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I believe it would be $('*[name=radios]:checked').val().

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Excerpt from http://api.jquery.com/jQuery.post/ :

Example: send form data using ajax requests
$.post("test.php", $("#testform").serialize());

You probably shouldn't be stitching together all the elements by hand, and can instead perform an ajax POST using jQuery's http://api.jquery.com/serialize/ function.

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From: http://api.jquery.com/val/

$('input:radio[name=bar]:checked').val();