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Building Blocks & Utilities

Interactive Tutorial for Mastering n8n Expressions

When you run it, this walks you through a hands-on tutorial of n8n expressions covering the basics, arrays and combined techniques.

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What it does

# Tutorial - Mastering n8n Expressions Welcome! You know what JSON is. Now, let's learn how to use it. This workflow teaches you how to pull data from one node and use it in another using n8n's powerful expressions. What is an Expression? An expression is a small piece of code inside double curly braces {{ }} that gets replaced with a dynamic value when the workflow runs. It's the "glue" that connects your nodes. How to use this tutorial: 1. The first node, "Source Data", contains all the data we will use. Execute it once to see what's inside. 2. Follow the path from top to bottom. Each node is a new lesson. 3. Read the sticky note for each lesson, then look at the node's configuration and its output to understand the concept.

The steps

  1. Start Tutorial
  2. Source Data
  3. 1. The Basics
  4. 3. Working with Arrays
  5. 4. Going Deeper
  6. 5. The Combo Move
  7. 6. A Touch of Magic
  8. 9. The "All Items" View
  9. Final Exam
  10. 2. The n8n Selectors
  11. 7. Inspecting Objects
  12. 8. Utility Functions
  13. Split Out Skills

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