Create a Blazor Webassembly Excel add-in + ribbon This sample shows how to build an Excel add-in using .NET Blazor technologies with typescript. Blazor Webassembly allows you to build Office Add-ins ...

Excel add-ins JavaScript API reference Applies to: Excel 2016, Office 2016 The links below show the high level Excel objects available in the APIs. Each object page link contains a description of the ...

At its Ignite conference, Microsoft today announced an update to Excel that brings a new JavaScript API to the venerable spreadsheet app. With this new API, developers will be able to create custom ...

At its Ignite conference, Microsoft today announced an update to Excel that brings a new JavaScript API to the venerable spreadsheet app. With this new API, developers will be able to create ...

At its Ignite conference, Microsoft today announced an update to Excel that brings a new JavaScript API to the venerable spreadsheet app. With this new API, developers will be able to create ...

Javascript custom functions are now supported in the Insider program's Excel (build 9325) so that developers can extend Excel's built-in function set.

I mean, what could possibly go wrong? Last December, Microsoft published a Dev Center article that talked about using the new Excel JavaScript API to create add-ins for Excel 2016.

Microsoft's Excel team takes to Reddit to answer questions and reassure users that yes, you can open up more than one Excel window at the same time.