如何检测用户使用的是 Excel 在线版还是 Excel 桌面版

Question

I have seen another answer to this, but I could not get it to work and I was not allowed to ask another question.

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

I find that there are often occurrences where Excel Online just does not behave the same as Excel Desktop. I know it should but it doesn't, so I really need to be able to control behaviour to get me out of a hot spot.

How can I tell which version of Excel I am using.

I have seen the following code, but it just hangs my javascript:

if (Microsoft.Office.WebExtension.context.document instanceof OSF.DDA.ExcelWebAppDocument) {
                                //Your app running on the web
                            }

if (Microsoft.Office.WebExtension.context.document instanceof OSF.DDA.ExcelDocument) {
                                //Your app running in excel
                            }

The issue is to do with OSF.DDA.... These do not come up in my intellisense, so I wonder, do I have something missing?

Answer 1

The quick answer is that you can check if the add-in is running in an iframe:

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

However, we recommend that you check for the actual behaviour or capability that you need - this approach will be more robust to changes in the future. Let's say you need a particular Excel API that's currently unavailable in Excel Online. Then follow the guidance for specifying Office hosts and API requirements . For example, you could check:

if (Office.context.requirements.isSetSupported("ExcelApi", 1.3)){
    // use the Excel 1.3 API set which currently isn't available in Excel Online but will be in the future.
}

Another possibility is that what you actually need is a particular browser feature that might not be available depending on what browser the user is accessing Office Online with. Then my recommended solution would again be to check for the capability you need directly, such as:

if(window.localStorage){
    // the browser that the user is accessing Excel Online with has the local storage capability that you need.
}

-Michael (PM for Office add-ins)

Answer 2

I used a no script option. Function INFO works in desktop excel but gives error in web based view.

=INFO("DIRECTORY")

In Desktop view it gives a path, in web it gives error, so I use =ISERROR() to check, which view is used.

Answer 3

The current way to do this is:

if (Office.context.platform === Office.PlatformType.OfficeOnline) {
   ...
}

Answer 4

Like ranno said but I use...

=IFERROR(IF(INFO("system")="pcdos","PC","Net"),"Net")

Because for my purpose Mac is as bad as Web.