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Practical Node-RED Programming

You're reading from   Practical Node-RED Programming Learn powerful visual programming techniques and best practices for the web and IoT

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Product type Paperback
Published in Mar 2021
Publisher Packt
ISBN-13 9781800201590
Length 326 pages
Edition 1st Edition
Languages
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Author (1):
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Taiji Hagino Taiji Hagino
Author Profile Icon Taiji Hagino
Taiji Hagino
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Table of Contents (19) Chapters Close

Preface 1. Section 1: Node-RED Basics
2. Chapter 1: Introducing Node-RED and Flow-Based Programming FREE CHAPTER 3. Chapter 2: Setting Up the Development Environment 4. Chapter 3: Understanding Node-RED Characteristics by Creating Basic Flows 5. Chapter 4: Learning the Major Nodes 6. Section 2: Mastering Node-RED
7. Chapter 5: Implementing Node-RED Locally 8. Chapter 6: Implementing Node-RED in the Cloud 9. Chapter 7: Calling a Web API from Node-RED 10. Chapter 8: Using the Project Feature with Git 11. Section 3: Practical Matters
12. Chapter 9: Creating a ToDo Application with Node-RED 13. Chapter 10: Handling Sensor Data on the Raspberry Pi 14. Chapter 11: Visualize Data by Creating a Server-Side Application in the IBM Cloud 15. Chapter 12: Developing a Chatbot Application Using Slack and IBM Watson 16. Chapter 13: Creating and Publishing Your Own Node on the Node-RED Library 17. Other Books You May Enjoy Appendix: Node-RED User Community

Creating your own node

Before developing a node, there is something you need to know first. The following policies are set for node development. Let's follow these and develop a node.

When creating a new node, you need to follow some general rules. They adhere to the approach adopted by the core nodes and provide a consistent user experience.

You can check the rules for creating a node on the official Node-RED website: https://nodered.org/docs/creating-nodes/.

Node program development

Node-RED nodes consist of two files: a JavaScript file that defines processing and an HTML file that provides a UI such as a setting screen. In the JavaScript file, the processing of the node you create is responsible for is defined as a function. This function is passed an object that contains node-specific properties. The HTML file describes the property settings screen displayed by the Node-RED flow editor. The settings values entered on the property settings screen displayed in this...

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