$application = new QApplication($argc, $argv); $webview = new QWebEngineView(); $webview->setUrl(new QUrl('http://www.example.com')); $webview->show(); $application->exec(); $webview->page()->executeJavaScript("document.body.style.backgroundColor = 'blue';");
$application = new QApplication($argc, $argv); $webview = new QWebEngineView(); $webview->setUrl(new QUrl('http://www.example.com')); $webview->show(); $application->exec(); $value = $webview->page()->executeJavaScript("document.getElementById('input_box').value;"); echo $value;In this example, we first create a QApplication object and a QWebEngineView object. We then set the URL of the web view to http://www.example.com and show it. Finally, we execute the QApplication event loop and use the ExecuteJavaScript method to retrieve the value of an input field with the ID of "input_box" on the webpage. The value is then echoed to the console. The package library for QApplication ExecuteJavaScript is the Qt framework.