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Built in methods and variables

Built-in methods and variables Current node input Output of other nodes Built-in date and time methods JMESPath method HTTP node variables LangChain Code node methods n8n metadata Convenience methods

Data transformation functions

Custom variables

Custom variables

Cookbook

Date and time with Luxon Query JSON with JMESPath

Examples using n8n's built-in methods and variables

Expressions cookbook

Code node cookbook

Output to the browser console with `console.log()` or `print()` in the Code node Get the binary data buffer Get number of items returned by the previous node

Examples using n8n's HTTP Request node

n8nShow Community Docs

文档集成部署代码 AI API Embed

Code node cookbook

Output to the browser console with `console.log()` or `print()` in the Code node

How to use console.log() or print()

Output to the browser console with `console.log()` or `print()` in the Code node

You can use console.log() or print() in the Code node to help when writing and debugging your code.

For help opening your browser console, refer to this guide by Balsamiq.

console.log (JavaScript)

For technical information on console.log(), refer to the MDN developer docs.

For example, copy the following code into a Code node, then open your console and run the node:

let a = "apple";
console.log(a);

print (Python)

For technical information on print(), refer to the Real Python's guide.

For example, set your Code node Language to Python, copy the following code into the node, then open your console and run the node:

a = "apple"
print(a)

Handling an output of `[object Object]`

If the console displays [object Object] when you print, check the data type, then convert it as needed.

To check the data type:

print(type(myData))

JsProxy

If type() outputs <class 'pyodide.ffi.JsProxy'>, you need to convert the JsProxy to a native Python object using to_py(). This occurs when working with data in the n8n node data structure, such as node inputs and outputs. For example, if you want to print the data from a previous node in the workflow:

previousNodeData = _("<node-name>").all();
for item in previousNodeData:
	# item is of type <class 'pyodide.ffi.JsProxy'>
	# You need to convert it to a Dict
	itemDict =

Refer to the Pyodide documentation on JsProxy for more information on this class.

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Code node cookbook

Code examples you can use in the Code node.

Get the binary data buffer

The binary data buffer contains all the binary file data processed by a workflow. You need to access it if you want to perform operations on the binary data, such as:

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Output to the browser console with console.log() or print() in the Code node

console.log (JavaScript)

Handling an output of [object Object]

item

.

json

.

to_py

()

print(itemDict)

Output to the browser console with `console.log()` or `print()` in the Code node