<form id="cmd_form" method="post">
    <div>

        <input type="radio" id="rec_video" name="Command" /><label for="rec_video">Включить запись видео</label><br />
        <input type="radio" id="rec_sound" name="Command" /><label for="rec_sound">Включить запись звука</label><br />
        <input type="radio" id="logs_upload" name="Command" /><label for="logs_upload">Загрузить логи SMS и Звонков</label><br />

        <button type="button" id="sub" value="sub">Подтвердить действие</button>

        <input type="submit" id="submit_form" value="Отправить" />
    </div>
</form>

<script>

    var devIpAddr;
    var devCmd;


    var sample = {};
    sample.postData = function () {

    };

    $('#sub').click(function (e) {
        e.preventDefault();

        var cmd = "";

        if (document.getElementById('rec_video').checked) {
            cmd = "cmd_rec_video";
            $.ajax({
                type: "POST",
                url: "@Url.Action("PostCommand")",
                data: "command = [{cmd :" + cmd + "}]",
                success: function (data) { alert('data: ' + data); },
            complete: function () { alert('finished'); alert(); }

        });

    }
        if (document.getElementById('rec_sound').checked) {
            cmd = "cmd_rec_sound";
            $.ajax({
                type: "POST",
                url: "@Url.Action("PostCommand")",
                data: "command = [{cmd :" + cmd + "}]",
            success: function (data) { alert('data: ' + data); },
            complete: function () { alert('finished'); alert(); }

        });

        }

    if (document.getElementById('logs_upload').checked) {
        cmd = "cmd_logs_upload";

        $.ajax({
            type: "POST",
            url: "@Url.Action("PostCommand")",
            data :  "command = [{cmd :"+ cmd+"}]",
        success: function (data) { alert('data: ' + data); },
        complete: function () { alert('finished'); alert(); }

    });

    }
    if (cmd == "") alert("Не выбрана команда");


    //devCmd = cmd;
    //sample.postData(devCmd);


    alert('sample=' + sample);
    });


</script>