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Template to get start started writing an Excel custom function Office Add-in that used a shared runtime and JavaScript

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Custom functions in Excel

Custom functions enable you to add new functions to Excel by defining those functions in JavaScript as part of an add-in. Users within Excel can access custom functions just as they would any native function in Excel, such as SUM().

This repository contains the source code used by the Yo Office generator when you create a new custom functions project. You can also use this repository as a sample to base your own custom functions project from if you choose not to use the generator. For more detailed information about custom functions in Excel, see the Custom functions overview article in the Office Add-ins documentation or see the additional resources section of this repository.

Debugging custom functions

This template supports debugging custom functions from Visual Studio Code. For more information see Custom functions debugging. For general information on debugging task panes and other Office Add-in parts, see Test and debug Office Add-ins.

Questions and comments

We'd love to get your feedback about this sample. You can send your feedback to us in the Issues section of this repository.

Questions about Office Add-ins development in general should be posted to Microsoft Q&A. If your question is about the Office JavaScript APIs, make sure it's tagged with [office-js-dev].

Join the Microsoft 365 Developer Program

Join the Microsoft 365 Developer Program to get resources and information to help you build solutions for the Microsoft 365 platform, including recommendations tailored to your areas of interest.

You might also qualify for a free developer subscription that's renewable for 90 days and comes configured with sample data; for details, see the FAQ.

Additional resources

This project has adopted the Microsoft Open Source Code of Conduct. For more information, see the Code of Conduct FAQ or contact [email protected] with any additional questions or comments.

Copyright

Copyright (c) 2019 Microsoft Corporation. All rights reserved.

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Template to get start started writing an Excel custom function Office Add-in that used a shared runtime and JavaScript

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