addUserScript method

Future<void> addUserScript({

})

Injects the specified userScript into the webpage’s content.

Officially Supported Platforms/Implementations:

Android WebView
iOS WKWebView (Official API - WKUserContentController.addUserScript):
- This method will throw an error if the PlatformWebViewCreationParams.windowId has been set. There isn't any way to add/remove user scripts specific to window WebViews. This is a limitation of the native WebKit APIs.
Linux WPE WebKit (Official API - webkit_user_content_manager_add_script)
macOS WKWebView (Official API - WKUserContentController.addUserScript):
- This method will throw an error if the PlatformWebViewCreationParams.windowId has been set. There isn't any way to add/remove user scripts specific to window WebViews. This is a limitation of the native WebKit APIs.
Web <iframe> but requires same origin
Windows WebView2

Parameters - Officially Supported Platforms/Implementations:

Use the PlatformInAppWebViewController.isMethodSupported method to check if this method is supported at runtime.

Implementation

Future<void> addUserScript({required UserScript userScript}) =>
    platform.addUserScript(userScript: userScript);