But

raise the event on click or mouseover

<input id="rdo1" type="radio" name="rdoTest" value="Hello" />
<input id="rdo2" type="radio" name="rdoTest" value="World" />
Test Value

$(document).ready(function () {
$('[name=rdoTest]').change(function () {
$('#test1').text($('[name=rdoTest]:checked').val());
});

$('#test1').change(function () {
    alert($('#test1').text());
});

});

My code here but nothing happened

<input id="rdo1" type="radio" name="rdoTest" value="Hello" />
<input id="rdo2" type="radio" name="rdoTest" value="World" />
Test Value

$(document).ready(function () {
$('[name=rdoTest]').change(function () {
$('#test1').text($('[name=rdoTest]:checked').val());
});

$('#test1').change(function () {
    alert($('#test1').text());
});

});

My code here but nothing happened