The site was opened in the Field with js working fine. But I fear this is not what you wanted.
So please, could you elaborate your case a little more.
Ah, one more thing. The BrowserField isn't working in Swing in the Version 3.8.0. Eclipse Scout 3.8.1 and 3.9 will provide the SwingScoutBrowserField in a separate bundle: org.eclipse.scout.rt.ui.swing.browser.swt.fragment. This because it uses SWT to display the browser.