The Technical Backbone

The Function Node operates as a flexible JavaScript execution environment within your n8n workflow:

• Input Access: Your code receives workflow data via the items array
• Code Execution: Write standard JavaScript/Node.js code to process this data
• Output Generation: Return modified data that continues through the workflow
• Error Handling: Built-in try/catch mechanisms ensure workflow resilience

Integration is seamless – the Function Node runs in the same environment as your workflow, with full access to incoming data and the ability to use JavaScript libraries. This creates a powerful bridge between no-code automation and custom development.