Lightning Aura Components Developer Guide

Introducing Aura Components
Quick Start
Creating Components
Component Names
Create Aura Components in the Developer Console
Create Aura Components Using Salesforce CLI
Component Markup
Component Namespace
Component Bundles
Component IDs
HTML in Components
CSS in Components
Component Attributes
Using Expressions
Component Composition
Component Body
Component Facets
Controlling Access
Using Object-Oriented Development
Best Practices for Conditional Markup
Aura Component Versioning for Managed Packages
Base Components with Minimum API Version Requirements
Validations for Aura Component Code
Using Labels
Localization
Working with Lightning Base Components
Supporting Accessibility
Accessibility for Lightning Base Components
Button Labels
Audio Messages
Forms, Fields, and Labels
Using Images and Icons
Events
Menus
Write Aura Component Accessibility Tests
Writing Documentation for the Component Library
Using Components
Communicating with Events
Communicating Across the DOM with Lightning Message Service
Creating Apps
Styling Apps
Developing Secure Code
Using JavaScript
Working with Salesforce Data
Testing Components
Debugging
Performance
Reference
PDF

Note: This release is in preview. Features described here don’t become generally available until the latest general availability date that Salesforce announces for this release. Before then, and where features are noted as beta, pilot, or developer preview, we can’t guarantee general availability within any particular time frame or at all. Make your purchase decisions only on the basis of generally available products and features.

Menus

A menu is a dropdown list with a trigger that controls the visibility of the list items. To create an accessible menu, use lightning:buttonMenu. Provide a text label or assistive text, and specify a list of menu items using lightning:menuItem. The dropdown menu items are hidden by default.

This example creates a menu with several items:

1<lightning:buttonMenu iconName="utility:settings"
2                      alternativeText="Settings"
3                      onselect="{! c.handleMenuSelect }">
4    <lightning:menuItem label="Font" value="font" />
5    <lightning:menuItem label="Size" value="size"/>
6    <lightning:menuItem label="Format" value="format" />
7</lightning:buttonMenu>

The alternativeText attribute provides a text label that’s hidden from view and available to assistive technology.

lightning:buttonMenu implements the menu blueprint in the Salesforce Lightning Design System and follows its accessibility guidelines.