Get ASP.Net RadioButtonList Selected Text and Value Client side using JavaScript

Ref: http://www.aspsnippets.com/Articles/Using-JavaScript-with-ASP.Net-RadioButtonList-Control.aspx

<script type = "text/javascript">
    function GetSelectedItem() {
        var RB1 = document.getElementById("<%=RadioButtonList1.ClientID%>");
        var radio = RB1.getElementsByTagName("input");
        var label = RB1.getElementsByTagName("label");
        for (var i = 0; i < radio.length; i++) {
            if (radio[i].checked) {
                alert("SelectedText = " + label[i].innerHTML);
                alert("SelectedValue = " + radio[i].value);
            }
        }
        return false;
    }
</script>