officejs | UNG 2.0 project aims

I have an office addin project that uses shared runtime. I recently found this error when I try to open the task pane with Office.addin.showAsTaskpane() from function execution.

The weird thing is that if I remove all custom functions of this add-in from the workbook, I will be able to open task pane again; also, I try copying all sheets from the workbook that has this issue to a new workbook, and everything works fine, I can open task pane on a new workbook.

So, I'm not sure if this error is related to a workbook-specific settings, or are there any APIs that I have to use to set AppRuntimeState. Has anyone found this error before? This seems like an error from officejs api, but I'm not sure what the root cause is because I can't find any apis about SetAppRuntimeState.

Can an OfficeJs Word add-in activate "split" mode? I'm hoping to programmatically achieve the same thing as the "Split" button in the below screenshot.

I'm working on an Outlook add-in using OfficeJS.

There does not seem to be a setAsync method on Office.context.mailbox.item.body when reading a message. I can understand why this generally makes sense.

Is there any way an add-in can alter the body text when reading a message?

I do not want to alter the original message on the server.

We have an excel add in with user roles based functionalities. We have an idea of creating a sample workbook with all the feature access for demo purpose. Do we have any unique identifiers for workbooks in excel ? If exists how can we access them using officejs. We did a research in officejs documentation and found out that Worksheets inside a workbook has unique identifiers. The disadvantage is that these id will be reused when the worksheet is deleted and new worksheet is created.

Reference link of worksheet documentation .

Officejs excel's OnSelectionChange listner does not work for the first time on a new sheet. But this happens only when we open the sheet for the first time. After which it works fine. Could anybody help me out to understand the working.

Update: This happens only in Excel web

Update: Please find the video attached for reference https://drive.google.com/file/d/1dBXH74Plu5TwA6ViUf6KlgI8CJZQscPg/view?usp=sharing

We have completed development of an Excel addin using the officejs API's. During the process of deploying it to App source we got a feedback that the addin shows blank screen when there is a slower internet connection. When we tried to debug it we got the following error ( when 3G Slow option is set in chrome ).

Uncaught Error: Office.js has not fully loaded. Your app must call "Office.onReady()" as part of it's loading sequence (or set the "Office.initialize" function). If your app has this functionality, try reloading this page.

But the same addin works fine when the internet speed is decent. Below is the piece of code that we have used to bootstrap the angular application.

I am looking for a way to automatically change an email address or be able to add a CC based on a condition. Is there an OfficeJS API call for outlook that lets me "edit" an email address or is able to add a CC based on a button click?

I am using this OfficeJs API to save metadata associated with excel add in app, and I am wondering how big data the setting can support in Excel add in, we notice when the setting get to a few MB, it doesn't get saved. Office.context.document.settings.set('mySetting', 'mySetting value');

I am writing a Word add-in using office-js that generates an index. It uses the following code to create a section break at the end of the document, and then writes the index there: