Locker Console Overview

Use Locker Console to check your JavaScript code’s compatibility with Lightning Locker, and compare how it runs with Lightning Locker enabled and disabled.

Access Locker Console in the Lightning Component Library.

Locker Console enables you to quickly evaluate JavaScript code for issues or benchmark code, without requiring you to create an app to test your component. You can evaluate only JavaScript code in Locker Console. You can't evaluate a complete component bundle or component markup.

Here's an overview of the user interface of the Locker Console tool.

Code Console (1)

Paste or type your JavaScript code here to evaluate or benchmark it.

Toggles (2)

• Enable or disable Locker.
• Enable or disable Strict CSP.

Actions (3)

• Click Evaluate to run the code that’s displayed in the code console. See Evaluate JavaScript Code Compatibility with Lightning Locker.
• Click Benchmark to run your code with and without Lightning Locker and view relative performance metrics. See Benchmark Lightning Locker Effect on JavaScript Code.
• Click Clear Results to clear all the displayed results.

See Also

• Lightning Locker API Viewer Overview
• Stricter CSP Restrictions
• Lightning Component Reference