This article introduces how To use Aspose.Cells library To directly calculate cusTom functions in Microsoft Excel without writing the function in a worksheet using JavaScript via C++. Load an existing Excel file or create a new one, calculate the cusTom function, and save the modified file....DOCTYPE html> < html > < head > < title > Aspose..."fileInput" accept = ".xls,.xlsx,.csv" /> < button id = "runExample"...