swift -> WKWebview -> alert / confirm/ prompt

 

 

    //alert
    func webView(_ webView: WKWebView, runJavaScriptAlertPanelWithMessage message: String, initiatedByFrame frame: WKFrameInfo, completionHandler: @escaping () -> Void) {
        let alertController = UIAlertController(title: nil, message: message, preferredStyle: .alert)
        alertController.addAction(UIAlertAction(title: "OK", style: .default, handler: { (action) in
            completionHandler()
        }))
        present(alertController, animated: true, completion: nil)
        print("dsf")
    }
    //confirm
    func webView(_ webView: WKWebView, runJavaScriptConfirmPanelWithMessage message: String, initiatedByFrame frame: WKFrameInfo, completionHandler: @escaping (Bool) -> Void) {
        let alertController = UIAlertController(title: nil, message: message, preferredStyle: .alert)
        alertController.addAction(UIAlertAction(title: "OK", style: .default, handler: { (action) in
            completionHandler(true)
        }))
        alertController.addAction(UIAlertAction(title: "Cancel", style: .default, handler: { (action) in
            completionHandler(false)
        }))
        present(alertController, animated: true, completion: nil)
    }
    //Pop up the input box js, onclick = prompt('xxxx','');
    func webView(_ webView: WKWebView, runJavaScriptTextInputPanelWithPrompt prompt: String, defaultText: String?, initiatedByFrame frame: WKFrameInfo,
                 completionHandler: @escaping (String?) -> Void) {
        let alertController = UIAlertController(title: nil, message: prompt, preferredStyle: .alert)
        alertController.addTextField { (textField) in
            textField.text = defaultText
        }
        alertController.addAction(UIAlertAction(title: "OK", style: .default, handler: { (action) in
            if let text = alertController.textFields?.first?.text {
                completionHandler(text)
            } else {
                completionHandler(defaultText)
            }
        }))
        alertController.addAction(UIAlertAction(title: "Cancel", style: .default, handler: { (action) in
            completionHandler(nil)
        }))
        present(alertController, animated: true, completion: nil)
    }
    //\\=======wkWebView alert / conifrm=============