var aspose = aspose || {};
aspose.cells = require("aspose.cells");
// Instantiate an instance of the Workbook class and load the source XLSX/XLS file. 
var workbook = new aspose.cells.Workbook("sample.xlsx");
// Create an object of the MarkdownSaveOptions class to manipulate the xls/xlsx to .md conversion 
var options = new aspose.cells.MarkdownSaveOptions();
// If the value of setCreateDirectory method is true and the directory does not exist, the directory will be automatically created before saving the file. 
options.setCreateDirectory(true);
// Invoke the setClearData method to make the workbook empty after saving the file.
options.setClearData(false);
// Call this setLineSeparator method to set the line separator.
options.setLineSeparator("#");
// Save as Markdown by invoking the save method 
workbook.save("Book1.md", options);