diff --git a/samples/webview/webview.cpp b/samples/webview/webview.cpp
index 0d9148c5d5..9a080a3c05 100644
--- a/samples/webview/webview.cpp
+++ b/samples/webview/webview.cpp
@@ -122,6 +122,7 @@ public:
     void OnTitleChanged(wxWebViewEvent& evt);
     void OnFullScreenChanged(wxWebViewEvent& evt);
     void OnScriptMessage(wxWebViewEvent& evt);
+    void OnScriptResult(wxWebViewEvent& evt);
     void OnSetPage(wxCommandEvent& evt);
     void OnViewSourceRequest(wxCommandEvent& evt);
     void OnViewTextRequest(wxCommandEvent& evt);
@@ -159,6 +160,7 @@ public:
     void OnRunScriptArrayWithEmulationLevel(wxCommandEvent& evt);
 #endif
     void OnRunScriptMessage(wxCommandEvent& evt);
+    void OnRunScriptAsync(wxCommandEvent& evt);
     void OnRunScriptCustom(wxCommandEvent& evt);
     void OnAddUserScript(wxCommandEvent& evt);
     void OnSetCustomUserAgent(wxCommandEvent& evt);
@@ -233,6 +235,7 @@ private:
 #endif
     wxMenuItem* m_script_message;
     wxMenuItem* m_script_custom;
+    wxMenuItem* m_script_async;
     wxMenuItem* m_selection_clear;
     wxMenuItem* m_selection_delete;
     wxMenuItem* m_find;
@@ -492,6 +495,7 @@ WebFrame::WebFrame(const wxString& url) :
         m_script_array_el = script_menu->Append(wxID_ANY, "Return array changing emulation level");
     }
 #endif
+    m_script_async = script_menu->Append(wxID_ANY, "Return String async");
     m_script_message = script_menu->Append(wxID_ANY, "Send script message");
     m_script_custom = script_menu->Append(wxID_ANY, "Custom script");
     m_tools_menu->AppendSubMenu(script_menu, _("Run Script"));
@@ -551,6 +555,7 @@ WebFrame::WebFrame(const wxString& url) :
     Bind(wxEVT_WEBVIEW_TITLE_CHANGED, &WebFrame::OnTitleChanged, this, m_browser->GetId());
     Bind(wxEVT_WEBVIEW_FULLSCREEN_CHANGED, &WebFrame::OnFullScreenChanged, this, m_browser->GetId());
     Bind(wxEVT_WEBVIEW_SCRIPT_MESSAGE_RECEIVED, &WebFrame::OnScriptMessage, this, m_browser->GetId());
+    Bind(wxEVT_WEBVIEW_SCRIPT_RESULT, &WebFrame::OnScriptResult, this, m_browser->GetId());
 
     // Connect the menu events
     Bind(wxEVT_MENU, &WebFrame::OnSetPage, this, setPage->GetId());
@@ -596,6 +601,7 @@ WebFrame::WebFrame(const wxString& url) :
 #endif
     Bind(wxEVT_MENU, &WebFrame::OnRunScriptMessage, this, m_script_message->GetId());
     Bind(wxEVT_MENU, &WebFrame::OnRunScriptCustom, this, m_script_custom->GetId());
+    Bind(wxEVT_MENU, &WebFrame::OnRunScriptAsync, this, m_script_async->GetId());
     Bind(wxEVT_MENU, &WebFrame::OnAddUserScript, this, addUserScript->GetId());
     Bind(wxEVT_MENU, &WebFrame::OnSetCustomUserAgent, this, setCustomUserAgent->GetId());
     Bind(wxEVT_MENU, &WebFrame::OnClearSelection, this, m_selection_clear->GetId());
@@ -924,6 +930,11 @@ void WebFrame::OnScriptMessage(wxWebViewEvent& evt)
     wxLogMessage("Script message received; value = %s, handler = %s", evt.GetString(), evt.GetMessageHandler());
 }
 
+void WebFrame::OnScriptResult(wxWebViewEvent& evt)
+{
+    wxLogMessage("Async script result received; value = %s", evt.GetString());
+}
+
 void WebFrame::OnSetPage(wxCommandEvent& WXUNUSED(evt))
 {
     m_browser->SetPage
@@ -1199,6 +1210,11 @@ void WebFrame::OnRunScriptMessage(wxCommandEvent& WXUNUSED(evt))
     RunScript("window.wx.postMessage('This is a web message');");
 }
 
+void WebFrame::OnRunScriptAsync(wxCommandEvent& WXUNUSED(evt))
+{
+    m_browser->RunScriptAsync("function f(a){return a;}f('Hello World!');");
+}
+
 void WebFrame::OnRunScriptCustom(wxCommandEvent& WXUNUSED(evt))
 {
     wxTextEntryDialog dialog