JqueryScript

   <script src="https://code.jquery.com/jquery-3.0.0.js"></script>
    <script type="text/javascript">
        $(document).ready(function () {
            //Attach change event to radiobuttonlist controls
            $("input:radio").change(function (obj) {
                //Get the selected radiobutton value
                var type = $.trim($(this).val());
                //check if value selected is equal to Yes
                if (type == "Yes") {
                    //find the textbox control based on selected radiobutton control
                    //Use the props to enable and disable the textbox control
                    $(this).closest(".container").find(".txtbox").prop("disabled", false);
                }
                else
                    $(this).closest(".container").find(".txtbox").prop("disabled", true);
            });
        });
    </script>