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Word JavaScript API requirement sets

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Requirement sets are named groups of API members. Office Add-ins use requirement sets specified in the manifest or use a runtime check to determine whether an Office application supports APIs that an add-in needs. For more information, see Office versions and requirement sets.

Requirement set availability

Word add-ins run across multiple versions of Office, including Office 2016 or later on Windows, and Office on the web, iPad, and Mac. The following table lists the Word requirement sets, the Office client applications that support that requirement set, and the build or version numbers for those applications.

Note

To use APIs in any of the numbered requirement sets or WordApiOnline, you should reference the production library on the Office.js content delivery network (CDN).

For information about using preview APIs, see the Word JavaScript preview APIs article.

Requirement set Office on Windows*
(connected to a Microsoft 365 subscription)		 Office on iPad
(connected to a Microsoft 365 subscription)		 Office on Mac
(connected to a Microsoft 365 subscription)		 Office on the web
Preview Please use the latest Office version to try preview APIs (you may need to join the Office Insider program)
WordApiOnline 1.1 N/A N/A N/A Latest (see requirement set page)
WordApi 1.3 Version 1612 (Build 7668.1000) or later March 2017, 2.22 or later March 2017, 15.32 or later March 2017
WordApi 1.2 December 2015 update, Version 1601 (Build 6568.1000) or later January 2016, 1.18 or later January 2016, 15.19 or later September 2016
WordApi 1.1 Version 1509 (Build 4266.1001) or later January 2016, 1.18 or later January 2016, 15.19 or later September 2016

Note

Non-subscription versions of Office support requirement sets as follows:

  • Office 2019 and Office 2021 support WordApi 1.3 and earlier.
  • Office 2016 only supports the WordApi 1.1 requirement set.

Office versions and build numbers

For more information about Office versions and build numbers, see:

See also