Custom functions (similar to user-defined functions, or UDFs), enable developers to add any JavaScript function to Excel using an add-in. Users can then access custom functions like any other ...

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 ...

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 ...

By enabling JavaScript in Excel, Microsoft potentially opens the door to any number of cyberwoes. HOTLITTLEPOTATO All products featured on WIRED are independently selected by our editors.