JavaScript API
An Office service that supports add-ins to interact with objects in Office client applications.
864 questions
Can an office addin read/write an external file?
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Robert Rodini
11
Reputation points
The file may be a .dotx template or a configuration file governing its behavior.
JavaScript API
Office Development
Office Development
Office: A suite of Microsoft productivity software that supports common business tasks, including word processing, email, presentations, and data management and analysis.Development: The process of researching, productizing, and refining new or existing technologies.
3,471 questions
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David 1 Reputation point2022-01-19T04:13:02.713+00:00 If you can do it with JavaScript in the browser, you can usually also do it from your web-based Office add-in. Where is your external file located?
I have an add-in that reads files from SharePoint Online/OneDrive so that is definitely possible. Reading a file from the local file system might be a bit trickier but still feasible. See here: https://stackoverflow.com/questions/14446447/how-to-read-a-local-text-file
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