javascript - Comment puis-je savoir quel bouton radio est sélectionné via jQuery

92

$('input[name=radioName]:checked', '#myForm').val() 

$('#myForm input').on('change', function() {     alert($('input[name=radioName]:checked', '#myForm').val());   });

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>  <form id="myForm">    <input type="radio" name="radioName" value="1" /> 1 <br />    <input type="radio" name="radioName" value="2" /> 2 <br />    <input type="radio" name="radioName" value="3" /> 3 <br />  </form>

82

$("#myform input[type='radio']:checked").val(); 

80

var myRadio = $("input[name=myRadio]"); 

var checkedValue = myRadio.filter(":checked").val(); 

var form = $("#mainForm"); ... var checkedValue = form.find("input[name=myRadio]:checked").val(); 

70

$("input[name='radioName']:checked").val() 

52

 $("form:radio:checked").val();