Mastering the n8n Code Node for Advanced Data Transformation

• Advanced Data Filtering & Transformation: Learn to selectively process data, add calculated fields (like bonuses), and format values based on custom logic.
• Statistical Aggregation & Reporting: Discover how to compute averages, totals, distributions, and other key metrics for reporting and business intelligence.
• Flexible Data Formatting for Export: Master preparing data in various formats suitable for API integrations, email campaigns, CSV exports, and more.
• Practical JavaScript Examples: Gain hands-on experience with common JavaScript patterns like .filter(), .map(), and .reduce() within an n8n context.
• Comprehensive Learning Resource: Includes detailed sticky notes explaining concepts, best practices, and quick start instructions for easy experimentation.

To get started with this workflow and master the Code node:

1. Execute the Workflow: Click the 'Test workflow' button in the n8n editor to run all the examples.
2. Inspect Code Node Outputs: After execution, review the output of each 'Code' node (e.g., 'Code: Filter & Transform', 'Code: Calculate Stats') to see the results of the JavaScript logic.
3. Experiment with the Code: Select any 'Code' node and modify the JavaScript within its 'Code' parameter. Try changing conditions, adding new calculations, or altering output formats.
4. Adapt Patterns for Your Projects: Copy the demonstrated JavaScript patterns and apply them to your own n8n workflows for custom data manipulation needs.

Pro Tips:

• Use console.log() inside your Code nodes for effective debugging during development.
• Start testing with smaller datasets to ensure your logic behaves as expected before scaling up.
• Always consider and handle edge cases in your JavaScript to prevent unexpected errors.
• Ensure your Code node returns data in the proper [{ json: data }] format for n8n to process it correctly.