How to calculate IFNA functions using the Aspose.Cells library For Node.js via C++. Load an existing Excel file or create a new one, and calculate the IFNA function to get the result. Finally, save the modified Excel file to disk....How to calculate IFNA functions using the Aspose.Cells library for Node.js via C++. Load an existing Excel file or create a new one, and calculate the IFNA function to get the result. Finally, save the modified Excel file to disk.