| API - OOXML |
| API - OoxmlCoercion |
| API - Outlook |
| API - PartialTableBindings |
| API - PdfFile |
| API - PowerPoint |
| API - Selection |
| API - Settings |
| API - Shared |
| API - TableBinding |
| API - TableBindings |
| API - TableCoercion |
| API - TextBindings |
| API - TextCoercion |
| API - TextFile |
| API - Word |
| App Domains |
| App Domains - Allow |
| App.css |
| App.js |
| app.showNotification |
| appendChild |
| Applications - Excel |
| Applications - Outlook |
| Applications - PowerPoint |
| Applications - Word |
| AppointmentAttendeeCommandSurface |
| AppointmentAttendeeCommandSurface |
| AppointmentOrganizerCommandSurface |
| AppointmentOrganizerCommandSurface |
| Apps for Office |
| appsforoffice.microsoft.com/lib/beta |
| AppSource |
| arguments Object |
| arguments[0] |
| Array Literals |
| Array of Promises |
| Arrays |
| Arrays - Associative |
| Arrays - concat |
| Arrays - indexof |
| Arrays - join |
| Arrays - lastindexof |
| Arrays - map |
| Arrays - pop |
| Arrays - push |
| Arrays - reduce |
| Arrays - reverse |
| Arrays - shift |
| Arrays - slice |
| Arrays - sort |
| Arrays - splice |
| Arrays - toLocaleString |
| Arrays - toString |
| Arrays - unshift |
| Arrays of Arrays |
| Associative Arrays |
| async |
| Async Callbacks |
| Async Methods |
| Asynchronous Functions |
| Asynchronous Methods |
| Asynchronous Model |
| AsyncResult |
| AsyncResultStatus |
| AttachmentType - Enumeration |
| Augmented Assignment Operators |
| Aurelia |
| aurelia.js |
| auth.getAccessTokenAsync |
| Authentication |
| Automatic Type Conversion |
| Automation - Grunt |
| Automation - Gulp |
| await |
| await context.sync |
| Azure Active Directory |
| |