如何在Flutter webview中操作HTML？

Question

I am load website with Flutter webview. But I want replace HTML element when it load. For example:

<span class="name">Replace text</span>

How to do?

Answer 1

So, it depends what library you are using to load your webview.

I have had some good success using webview_flutter_plus ( https://pub.dev/packages/webview_flutter_plus ).

With this, you just need to wait for your html to load and inject some javascript to modify whatever html you want.

Like this:

Widget build(BuildContext context) {
    return WebViewPlus(
        initialUrl: myUrl,
        javascriptMode: JavascriptMode.unrestricted,
        onWebViewCreated: (WebViewPlusController webViewController) {
            _webViewController = webViewController;
        },
        onPageFinished: (String url) {
            _webViewController.evaluateJavascript('document.querySelector(".name").innerHTML = "new text";');
        }
   }
}