Allow Officejs to open external excel workbook programatically
There should be a way to open a external excel workbook by providing URL for that file on excel online via officejs. so that user can open a template stored on some other server which contains desired formatting and named-ranges which can be modified on Excel Online

This API is now available in production!
Here is a sample snippet
https://gist.github.com/JuaneloJuanelo/399608d6928f6183b474af8f1f7e1c8a
Key instruction: Excel.createWorkbook(mybase64);
please enjoy!!!
5 comments
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Maulik Kotadia commented
@Admin Thanks for the feedback.I appreciate
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Lloyd A Charlier commented
Couldn't agree more. We currently develop addins for the entire Office suite (using .NET and VSTO) that enable users to load/save documents to/from a 3rd-party content management system. We would love to provide this same functionality using Office.js but have hit this wall. Please add!
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Maulik Kotadia commented
I agree @atti
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atti commented
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atti commented
The same should be possible with saving the file.