Programming Microsoft Office 365 Apr 2026

: Use this file to ensure your feature matches the Office look and feel. 4. Implement Logic (JavaScript/TypeScript)

Before coding, ensure you have the necessary tools installed and an active sandbox environment: Programming Microsoft Office 365

Your feature's visual appearance is defined using standard web code: : Use this file to ensure your feature

The toolkit will generate a project configured for Excel, Outlook, PowerPoint, and Word by default. 3. Build the User Interface (HTML/CSS) Programming Microsoft Office 365