Problem in retriving radio button checked value from Spring radio button tag

[DivyPrakash Singh]

My jsp code:

<tr id="uploadImage">
<td>
Upload Image
</td>
<td>
<form:radiobutton path="uploadImage" value="Yes" onclick="changeImageView('Yes')" />
Yes
<form:radiobutton path="uploadImage" value="No" onclick="changeImageView('No')" />
No
</td>
</tr>
<tr id="image" style="display:none">



My javascript code to retrive radio button values:


var uploadImage = document.getElementById('uploadImage');
var radioLength = uploadImage .value.length;
for(var i = 0; i < radioLength; i++) {
if(radioObj[i].checked) {
var radioButtonValue= radioObj[i].value;
}
}


If i am using this script to retrive values i m not able to get the value of selected Radio Button.Am i missing something?