jQuery get value of selected radio button


The problem statement is simple. I need to see if user has selected a radio button from a radio group. Every radio button in the group share same id.

The problem is that I don't have control on how the form is generated. Here is the sample code of how a radio button control code looks like:

<input type="radio" name='s_2_1_6_0' value='Mail copy to my bill to address' id = "InvCopyRadio" onchange = 'SWESubmitForm(document.SWEForm2_0,s_4,"","1-DPWJJF")' style="height:20;width:25" tabindex=1997 >

In addition to this when a radio button is selected it doesn't add a "checked" attribute to the control just text checked (I guess just the property checked without a value). Below is how a selected radio control looks like

<input type="radio" checked name='s_2_1_6_0' value='Mail copy to my bill to address' id = "InvCopyRadio" onchange = 'SWESubmitForm(document.SWEForm2_0,s_4,"","1-DPWJJF")' style="height:20;width:25" tabindex=1997 >

Can anybody help me with jQuery code that can help me to get the value of checked radio button?

12/24/2011 2:43:34 AM

First, you cannot have multiple elements with the same id. I know you said you can't control how the form is created, but...try to somehow remove all the ids from the radios, or make them unique.

To get the value of the selected radio button, select it by name with the :checked filter.

var selectedVal = "";
var selected = $("input[type='radio'][name='s_2_1_6_0']:checked");
if (selected.length > 0) {
    selectedVal = selected.val();


So you have no control over the names. In that case I'd say put these radio buttons all inside a div, named, say, radioDiv, then slightly modify your selector:

var selectedVal = "";
var selected = $("#radioDiv input[type='radio']:checked");
if (selected.length > 0) {
    selectedVal = selected.val();

Simplest way to get the selected radio button's value is as follows:


No space should be used in between selector.


$("#radioID") // select the radio by its id
    .change(function(){ // bind a function to the change event
        if( $(this).is(":checked") ){ // check if the radio is checked
            var val = $(this).val(); // retrieve the value

Make sure to wrap this in the DOM ready function ($(function(){...}); or $(document).ready(function(){...});).


  1. In your code, jQuery just looks for the first instance of an input with name q12_3, which in this case has a value of 1. You want an input with name q12_3 that is :checked.
    $("#submit").click(function() {     
  1. Note that the above code is not the same as using .is(":checked"). jQuery's is() function returns a boolean (true or false) and not an element.

<input type="radio" class="radioBtnClass" name="numbers" value="1" />1<br/>
<input type="radio" class="radioBtnClass" name="numbers" value="2" />2<br/>
<input type="radio" class="radioBtnClass" name="numbers" value="3" />3<br/>

This will return, checked radio button value.

if($("input[type='radio'].radioBtnClass").is(':checked')) {
    var card_type = $("input[type='radio'].radioBtnClass:checked").val();