Storing data into variables | Node-RED Essentials | Tutorial
Working with contexts, flow and global variables in Node-RED is a valuable skill when building complex automations.
Using JSON and JavaScript makes it a fairly intuitive experience in Node-RED.
I show you examples using the Change Node and the Function Node; these are both very useful nodes.
Check out my video on the Function Node: • Node-RED Function Node | Tutorial
Useful Links:
Contexts: https://nodered.org/docs/user-guide/c...
Writing Functions: https://nodered.org/docs/user-guide/w...
My Node-RED playlist: • Node-RED
00:00 Intro
00:42 Change Node - Setting string variables
03:11 Change Node - JSON Strings & JS Objects
04:56 - Saving variables across Node-RED restarts
06:46 Change Node - Clearing / removing variables
07:33 Global Variable example with Home Assistant entity
08:58 Function Node - Storing and retrieving from variables
11:20 Local / Node context - Accessing data just within a node
12:42 Outro
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