How to determine if an Office Add-in is running under Excel or Excel Online?

Question

I\'m writing an Office Add-in (formerly, Apps for Office). I\'m using office.js and in some point of code I want to check if the app is running in excel (deskto

Answer 1

The question is how do you do it, not why would you want to. There are numerous reasons why you might want to differentiate. Put in this check as follows:

if (window.top == window) {
//the add-in is not running in Excel Online
}
else
{
//the add-in is running in Excel online
}