Generate and Split Sample Data Records using JavaScript and Python
Go to WorkflowDescription
A minimal, plug-and-play workflow that generates sample data using n8n’s Code node (both JavaScript and Python versions included) and then fans out those records into individual items with Split Out. Perfect for testing downstream nodes, mapping, pagination, or prototyping list-based logic without connecting to real data sources.
✅ What this template does
Generates 20 sample records** with fields: index, num, and test
Writes the array to item.json.barr
Uses Split Out to convert the array into one item per record
Includes both JavaScript and Python implementations side-by-side
👤 Who’s it for
Builders who need mock data to test mappings and loops
Educators/demo makers who want a simple fan-out pattern
Anyone who wants a clean scaffold for list processing in n8n
⚙️ How it works / What it does
Generate Data Javascript**: Produces barr = [{ index, num, test }, ...] for 20 rows
Generate Data Python**: Same output, written in Python
Split Out Javascript / Python: Takes barr and emits **one item per element
> Use either branch (JS or Python) depending on your preference.
🛠️ How to set up
No external setup required. Import the workflow and Execute.
Select either the JavaScript or Python branch to see fan-out items.
📋 Requirements
n8n (Cloud or self-hosted)
No credentials or third-party services
🎛️ Customize the workflow
Change the number of rows: adjust the loop range (0..N)
Rename or add fields to each record (e.g., name, price, tags)
Replace the static array with generated or randomized data
Pipe the Split Out output into Set, Function, HTTP, or Sheets nodes for further testing
🗒️ Notes
Sticky notes are included for in-editor guidance.
Both implementations return the same structure so you can swap freely.
📬 Contact
Need help customizing this (e.g., shaping fields, adding randomizers, or exporting to CSV/Sheets)?
📧 [email protected]
🔗 Robert Breen — https://www.linkedin.com/in/robert-breen-29429625/
🌐 ynteractive.com — https://ynteractive.com