Lightning Aura Components Developer Guide

What Is the Lightning Component Framework?
Quick Start
Creating Components
Using Components
Communicating with Events
Creating Apps
Styling Apps
Developing Secure Code
What is Lightning Locker?
JavaScript Strict Mode Enforcement
DOM Access Containment
Secure Wrappers
eval() Function is Limited by Lightning Locker
MIME Types Permitted
Access to Supported JavaScript API Framework Methods Only
What Does Lightning Locker Affect?
Lightning Locker Tools
Lightning Locker API Viewer
Locker Console Overview
Disabling Lightning Locker for a Component
Don’t Mix Component API Versions
Lightning Locker Disabled for Unsupported Browsers
Content Security Policy Overview
Freeze JavaScript Prototypes
Using JavaScript
Working with Salesforce Data
Using Apex
Testing Components with Lightning Testing Service
Debugging
Performance
Reference
PDF

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Lightning Locker API Viewer

The Lightning Locker API Viewer shows the DOM APIs exposed by Locker versus the standard DOM APIs for the most complex wrappers: SecureDocument, SecureElement, and SecureWindow.

Access the API Viewer in the Component Library.

The API Viewer lets you quickly see the difference between the standard DOM APIs and the Locker APIs.

  • A white row indicates an API that behaves the same in Lightning Locker.
  • An orange row indicates an API that behaves differently in Lightning Locker.
  • A red row means that the API isn’t supported in Lightning Locker.

There are several ways to validate your code to ensure compatibility with Aura component APIs. For more information, see Validations for Aura Component Code.

Use the Locker Console to check JavaScript code’s compatibility with Lightning Locker.

Reference Doc App

The reference doc app lists the API for SecureComponent under JavaScript API | Component.

SecureAura is the wrapper for $A.

Access the reference doc app at:

https://<myDomain>.lightning.force.com/auradocs/reference.app, where <myDomain> is the name of your custom Salesforce domain.