Lightning 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 Locker Service?
JavaScript ES5 Strict Mode Enforcement
DOM Access Containment
Secure Wrappers
eval() Function is Limited by Locker Service
MIME Types Permitted
Access to Supported JavaScript API Framework Methods Only
What Does Locker Service Affect?
Locker Service Tools
Locker Service API Viewer
Locker Console Overview
Disabling Locker Service for a Component
Don’t Mix Component API Versions
Locker Service Disabled for Unsupported Browsers
Content Security Policy Overview
Freeze JavaScript Prototypes
Using JavaScript
Using Apex
Lightning Data Service
Testing Components with Lightning Testing Service
Debugging
Performance
Reference
PDF

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Locker Service API Viewer

The Locker Service API Viewer shows the DOM APIs exposed by Locker Service 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 Service APIs.

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

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

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

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.