Welcome to the JavaScript feedback portal. We’re happy you’re here! If you have feedback on how to improve the JavaScript, we’d love to hear it!>
Thanks for joining our community and helping improve Syncfusion products!
The export code for doing excel export assumes that the dataSource will be a simple array of objects so if you do Excel export from a chart using a DataManager instead you get no data rows in the exported file.
The documentation for Excel Export mentions no such limitation - undocumented limitation or an oversight the export code?
To demonstrate the issue I've modified one of your documentation chart examples which uses an "offline mode" DataManager such that it now has an export button. If you click on export you'll see that the exported file only has column headings but no data.