CODE EXAMPLE FOR JAVASCRIPT

flutter webview javascript

onWebViewCreated: (controller) {
  // register a JavaScript handler with name "myHandlerName"
  controller.addJavaScriptHandler(handlerName: 'myHandlerName', callback: (args) {
    // print arguments coming from the JavaScript side!
    print(args);
    // return data to the JavaScript side!
    return {
      'bar': 'bar_value', 'baz': 'baz_value'
    };
  });
},