Enabling JavaScript should make Excel more powerful, but increasing access points makes it even more of a web security nightmare than it already is.

Right now, JavaScript in Excel custom functions is only supported in the Developer Preview edition to Office 365 subscribers enrolled in the Office Insiders program. But it seems inevitable that in ...

Microsoft recently announced a developer preview release supporting JavaScript to create custom functions directly in Excel. This addition moves beyond the existing Microsoft Office JavaScript API ...

In the well-established Office Ready-Fire-Aim tradition, Microsoft adds two new “features” that beg to be abused. Details appeared at Build, and the bad guys already have their keyboards primed.

The Excel Services REST and SOAP APIs introduced in SharePoint 2010 are SharePoint only, but with the Excel Services JavaScript API you can work with embedded workbooks on a host web page — from ...

Within days of Microsoft announcing that they are introducing custom JavaScript equations in Excel, a security researcher has developed a way to use this method to load the CoinHive in-browser ...

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 ...

The custom functions for Excel feature lets organizations write their own additions to Excel's formula catalog using JavaScript. When written, they become available to end users within the formula ...

Microsoft is opening up Excel to developers with a new JavaScript API. It will let developers use custom data types like images, cards, and arrays.

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 ...