Need example to show how to show the alertDialg and confirmDialog for the webview

[XiaoGuo, Liu]

https://developer.ubuntu.com/api/qml/sdk-14.10/Ubuntu.Web.WebView/

alertDialog and promptDialog are there in the API, but a developer does not know how to make use of them.

Also, the code

import Ubuntu.Components 1.1
import Ubuntu.Web 0.2
WebView {
    contextualActions: ActionList {
        Action {
            text: i18n.tr("Open link in browser")
            enabled: contextualData.href.toString()
            onTriggered: Qt.openUrlExternally(contextualData.href)
        }
    }
}

it is not working at all.

"ReferenceError: contextualData is not defined"

It is good to provide a complete working example for developers on the page.

Best regards,
XiaoGuo