n8n JavaScript Code Assistant FAQs

Question 1

How do I access webhook data in an n8n Code node?

Accepted Answer

Webhook data is specifically nested under the body property. You should use $json.body or $input.first().json.body to access your payload fields correctly.

Question 2

What is the mandatory return format for n8n Code nodes?

Accepted Answer

You must always return an array of objects where each object contains a 'json' property, for example: [{json: {key: value}}]. Failing to follow this structure will cause the workflow to fail.

Question 3

Does this skill support date manipulation in n8n?

Accepted Answer

Yes, it provides guidance on using the built-in Luxon (DateTime) library, which is available inside Code nodes for formatting, arithmetic, and parsing dates.

Question 4

When should I use 'Run Once for All Items' mode?

Accepted Answer

Use this mode for most use cases, including data aggregation, filtering, sorting, or any logic that requires comparing or combining multiple input items into a single result.

Question 5

Can I make HTTP requests inside the n8n Code node?

Accepted Answer

Yes, n8n provides a built-in $helpers.httpRequest() method that allows you to perform asynchronous API calls directly within your JavaScript code node.

n8n JavaScript Code Assistant

Key Features

Use Cases

n8n JavaScript Code Assistant

Key Features

Use Cases