n8n-code-javascript

To transform data in n8n Code nodes using JavaScript, use $input.all() for batch processing or $input.item for per-item processing, then return results in the standard [{json: {...}}] format.

Yes, you can make HTTP requests in an n8n Code node by calling $helpers.httpRequest(). This enables API integration directly within your JavaScript logic without needing an external HTTP node.

The correct return format for n8n Code node JavaScript is an array of objects structured as [{json: {...}}]. Ensuring this exact output structure prevents workflow errors and safely passes data downstream.

$input.all() retrieves every incoming item for batch processing in n8n, whereas $input.first() accesses only the initial item. Choose $input.item instead for per-item processing mode.

No, you do not need external npm packages for date handling in n8n Code nodes. The environment provides DateTime via Luxon and other built-in utilities like $jmespath() for self-contained workflows.

n8n Code nodes often fail due to webhook data nesting and incorrect return formats. Access nested data safely and always return the standard [{json: {...}}] array to resolve execution errors.