Example Node

Basic Example Node
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Overview

The "Example Node" is a basic custom n8n node designed to process input data by adding or updating a field called "My String" in each item's JSON. The value for "My String" is taken from the node's input property. This node is useful for simple data transformation tasks, such as injecting user-provided text into workflow items or testing workflow logic with static values.

Practical examples:

  • Adding a note or label to each item in a dataset.
  • Testing downstream nodes by inserting a known string value.
  • Mapping user input into workflow data for further processing.

Properties

Name Type Meaning
My String String The description text. User-defined string that will be added to each item's output under the key myString.

Output

Each output item will have its json object extended with a new property:

{
  "myString": "<value of My String>"
}

If an error occurs and "Continue On Fail" is enabled, the output may also include:

{
  "error": <error object>,
  "pairedItem": <item index>
}

Dependencies

  • No external services or API keys are required.
  • No special n8n configuration or environment variables are needed.

Troubleshooting

Common issues:

  • If "My String" is left empty, the output field myString will be an empty string.
  • If an unexpected error occurs during execution and "Continue On Fail" is not enabled, the workflow will stop and display an error message.

Error messages:

  • Errors thrown will typically relate to missing or invalid input parameters. Ensure "My String" is set if required by your workflow.
  • If "Continue On Fail" is enabled, errors will be included in the output for the affected items, allowing the workflow to proceed.

Links and References

Discussion