Create a service in Hana XS (http://www.saphana.com/docs/DOC-3212) that receives data via oData and do the insert in the database. With this you will be able to make a call via JavaScript to the URL that contains the data and then another call posting them in oData format for Hana.
- oData Create/Update/Delete Support in SAP HANA SPS6 - YouTube
- HANA Academy - XS Engine: Server-Side Java Script Functions - YouTube
Best regards,
Angelo