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Enable Debug Mode for Lightning Components
Enable debug mode to make it easier to debug JavaScript code from Lightning components. Only enable debug mode for users who are actively debugging JavaScript. Salesforce is slower for users who have debug mode enabled.
Required Editions
| Available in: Salesforce Classic (not available in all orgs) and Lightning Experience |
Available for use in: Contact Manager, Group, Professional, Enterprise, Performance, Unlimited, and Developer Editions Create Lightning components using the UI in Enterprise, Performance, Unlimited, Developer Editions, or a sandbox. |
The Lightning Component framework executes in one of two modes: production and debug.
- Production Mode: By default, the framework runs in production
mode. This mode is optimized for performance. Framework code is optimized and “minified”
to reduce the size of the JavaScript code. As a result of this process, the JavaScript
code served to the browser is obfuscated. Optimization and minification are performed on
framework code only. Custom component code is not minified or obfuscated. Untouched custom
component code includes both components you create yourself, and components installed as
part of a managed package.
Minification is a performance optimization, not intellectual property protection. Code that’s minified is hard to read, but it’s not encrypted or otherwise prevented from being viewed.
- Debug Mode: When you enable debug mode, framework and component
JavaScript code isn’t minified and is easier to read and debug. Debug mode also adds more
detailed output for some warnings and errors.
Debug mode has a significant performance impact. Salesforce is slower for any user who has debug mode enabled. For this reason, we recommend using it only when actively debugging JavaScript code, and only for users involved in debugging activity. Don’t leave debug mode on permanently. Users who have debug mode enabled see a banner notification once a week while it’s enabled.
To enable debug mode for users in your org:
-
From Setup, enter Debug Mode in the Quick
Find box, then select Debug Mode Users.
Users with debug mode enabled have a check mark in the Debug Mode column.
- In the user list, locate any users who need debug mode enabled. If necessary, use the standard list view controls to filter your org’s users.
- Enable the selection checkbox next to users for whom you want to enable debug mode.
- Click Enable.
To disable debug mode for a user, follow the preceding steps and click Disable instead of Enable.
