Lightning Aura Components Developer Guide

What Is the Lightning Component Framework?
Quick Start
Creating Components
Using Components
Communicating with Events
Actions and Events
Handling Events with Client-Side Controllers
Component Events
Component Event Propagation
Create Custom Component Events
Fire Component Events
Handling Component Events
Component Handling Its Own Event
Handle Component Event of Instantiated Component
Handling Bubbled or Captured Component Events
Handling Component Events Dynamically
Component Event Example
Application Events
Event Handler Behavior for Active Components
Event Handling Lifecycle
Advanced Events Example
Firing Events from Non-Aura Code
Events Best Practices
Events Fired During the Rendering Lifecycle
Events Handled in the Salesforce Mobile App and Lightning Experience
System 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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Component Handling Its Own Event

A component can handle its own event by using the <aura:handler> tag in its markup.

The action attribute of <aura:handler> sets the client-side controller action to handle the event. For example:

1<aura:registerEvent name="sampleComponentEvent" type="c:compEvent"/>
2<aura:handler name="sampleComponentEvent" event="c:compEvent"
3    action="{!c.handleSampleEvent}"/>

The name attributes in <aura:registerEvent> and <aura:handler> must match, since each event is defined by its name.

Note