This article describes how to extend the default calculation engine in JavaScript by implementing a custom calculation engine using the Aspose.Cells library for JavaScript via C++. Load an existing Excel file or create a new one to use the methods provided and save the modified Excel file....body > < script src = "aspose.cells.js.min.js" ></ script > < script...ImplementCustomCalcu . run (); }); </ script > </ html > Result Please check...