Add worksheet activate/deactivate; workbook shutdown events to the Office Add-in Javascript APIs
The enhanced Excel-specific APIs available for developing Office Add-ins that run with Excel 2016 are a nice start. There are some key missing APIs. One area in need of extending is eventing. For workbooks that contain multiple worksheets, it is critical for the Add-in to be able to determine when a worksheet is activated/deactivated so that the Add-in's UI can adapt accordingly. Similarly, the Office Add-in should be able to hook an event so that when the workbook gets closed/shut down (and maybe Saved), the Add-in can persist in-memory state into the workbook.

Thank you for your request!
We are collecting API requirements for developing Office Add-ins in Excel, specifically for Events API.
If you are considering moving an existing COM/VSTO/VBA Add-in to Office Add-in, or creating a new Office Add-in in Excel, and have events requirements, please fill the survey below and help us focus on the right set of events and design. We truly appreciate your help!
Thanks!
Office Extensibility Team
2 comments
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衡成飞 commented
waiting.....
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Shaun Logan commented
I should have put this in the Office.js category