Lightning Aura Components Developer Guide

What Is the Lightning Component Framework?
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
Favor Composition Over Inheritance
What is Inherited?
Inherited Component Attributes
Abstract Components
Interfaces
Inheritance Rules
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 Base Lightning Components
Supporting Accessibility
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 with Lightning Testing Service
Debugging
Performance
Reference
PDF

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Inheritance Rules

This table describes the inheritance rules for various elements.

Element extends implements Default Base Element
component one extensible component multiple interfaces <aura:component>
app one extensible app N/A <aura:application>
interface multiple interfaces using a comma-separated list (extends="ns:intf1,ns:int2") N/A N/A