In addition to the steps described in this article, if you want to use TypeScript, then to get Intellisense you will need run the following command in a Node-enabled system prompt (or git bash window) from the root of your project folder. You must have Node.js installed (which includes npm).
npm install --save-dev @types/office-js
The simplest way to reference the API is to use our CDN by adding the following
<script> to your page's
/1/ in front of
If you plan to publish your Office Add-in from AppSource, you must use this CDN reference. Local references are only appropriate for internal, development, and debugging scenarios.
<head> section of the page. This ensures that the API is fully initialized prior to any body elements. Office hosts require that add-ins initialize within 5 seconds of activation. If your add-in doesn't activate within this threshold, it will be declared unresponsive and an error message will be displayed to the user.