Lightning Aura Components Developer Guide

What Is the Lightning Component Framework?
Quick Start
Creating Components
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
Lightning Data Service
Using Apex
Creating Server-Side Logic with Controllers
Testing Your Apex Code
Making API Calls from Apex
Make Long-Running Callouts with Continuations
@AuraEnabled Annotations for Continuations
Aura Component Continuations Example
Continuation-Specific Limits
Creating Components in Apex
Testing Components with Lightning Testing Service
Debugging
Performance
Reference
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Aura Component Continuations Example

Here’s the markup for a component with a button that starts the process of calling a continuation.

The component is wired to the Apex class that uses a continuation by setting the controller attribute in the <aura:component> tag.

Here’s the component’s JavaScript controller. The code calls the startRequest Apex method that uses a Continuation object. The response.getReturnValue() value for a successful response in the JavScript controller corresponds to the value returned by the Apex callback method defined in the Continuation object.

This JavaScript controller code is similar to any other component that calls an Apex method.