QtWebEngine and localStorage

// code placeholder
MainWindow::MainWindow(QWidget *parent) :  QMainWindow(parent), ui(new Ui::MainWindow)
{
    ui->setupUi(this);
  
    web_view = new QWebEngineView(this);
    web_view->setContextMenuPolicy( Qt::NoContextMenu);
    WebPage *pg = new WebPage();


    QWebEngineProfile *profile = QWebEngineProfile::defaultProfile();
    profile->setCachePath("/tmp/arm");
    profile->setPersistentStoragePath("/tmp/arm");

    QWebEngineSettings *ws = QWebEngineSettings::defaultSettings();
    pg->settings()->setAttribute(QWebEngineSettings::WebGLEnabled, true);
    pg->settings()->setAttribute(QWebEngineSettings::PluginsEnabled, true);
    pg->settings()->setAttribute(QWebEngineSettings::JavascriptCanOpenWindows, true);
    pg->settings()->setAttribute(QWebEngineSettings::JavascriptCanAccessClipboard, true);
    pg->settings()->setAttribute(QWebEngineSettings::LocalStorageEnabled, true);
    pg->settings()->setAttribute(QWebEngineSettings::JavascriptEnabled, true);
    pg->settings()->setAttribute(QWebEngineSettings::AutoLoadImages,true);


    web_view->setPage(pg);    
    web_view->load(QUrl("http://mysite.ru"));

    setCentralWidget(web_view);


}

// code placeholder
<script> if(localStorage.getItem("login") == null) { localStorage.setItem("login","test"); } </script>