钉钉微应用里formsubmit无效，在浏览器中有效，求救，谢谢

<script>
    function test() {
        alert("test")
        document.getElementById("loginForm").submit();
    }
</script>

<form method="post" id="loginForm" enctype="multipart/form-data">
    @{
        var notice = TempData["Notice"];

        if (notice != null)
        {
            <div class="important-note">notice</div>

        }
        else
        {
            <div class="note" id="notice">正在登录，请稍候...</div>

        }

    }

    <input type="hidden" name="userCode" id="userCode" />
    <input type="hidden" name="returnUrl" value="@ViewBag.ReturnUrl" />
    <button type="submit" class="button" value="登录" id="btn_submit" onclick="test();"/>
   @* <button type="button" class="button" value="aa" id="btn_ok" onclick="test();" />*@
</form>