Excel Adds JavaScript and Power BI Support
> Office developers have been wanting to write JavaScript custom functions for many reasons, such as:<p>> • Calculate math operations, like whether a number is prime.<p>It saddens me that this is a thing we want Javascript for.<p>So anyway, now we have XLL, COM, VBA, and Javascript.  All of them different but overlapping ways to extend what Excel can do.  Am I missing any?