buttons: [ { extend: 'excelHtml5', filename: function() { var date = new Date(); var n = date.getTime(); return 'Export_' + n; // Result: Export_1715094720.xlsx } } ] Use code with caution. 3. Updating the File Name After Initialization

buttons: [ { extend: 'excelHtml5', filename: 'Initial_Name', init: function(dt, node, config) { var self = this; $('#filename_dropdown').on('change', function() { config.filename = $(this).val(); // Updates the name for the next download }); } } ] Use code with caution. 4. Advanced: User Input Prompt

Sets the title of the document; often used as the fallback filename.

You can also prompt the user to type a name exactly when they click the export button by overriding the default action. javascript

To set a specific static file name, use the filename property in your button configuration. Note that you do not need to include the .xlsx extension, as DataTables adds it automatically. javascript

In some scenarios, you may want to change the file name based on a user's selection (e.g., a dropdown menu) after the table has already been loaded. Because the button configuration is typically read at initialization, you can use the init callback to attach an event listener that updates the button's internal config object. javascript

Sets the name of the individual worksheet tab inside Excel (default is "Sheet1").

For more advanced styling or data manipulation within the Excel file, you can utilize the customize function to manipulate the XLSX XML structure directly. File name - DataTables example