function getWebviewContent(uri) { return `<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <link rel='stylesheet' href='`+ uri + `' /> //This is the addition <title>Example Webview</title> </head> <body> <h1>This works!</h1> //Add some custom HTML here </body> </html>`; }