Hi, I'm pretty new to Node-red, I've been using it for about 2 years, but only to set things up. Im doing a mayor overhaull on my MQTT based smarthome, which has lights with many ways of controlling them, and I want my dashboard to display all the data changed somewhere else. I decided to use a glob…

[image] lolimpol: now if I for example change the value of brightness, I want to change that in the object (in a function node) but keep the rest the same you can retrieve the JS object from global context using global.get("name-of-object") and change 1 thing e.g... var myObject = global.get…

I understand that, but in my case I want to use global.set() for just the value myObject.brightness, and not affect any other value in the Object. If I simply use global.set("myObject", brightness), the whole object will just become the brightness.

[image] lolimpol: If I simply use global.set("myObject", brightness), the whole object will just become the brightness. then dont do that. put the whole object back in the store var myObject = global.get("name-of-object") || {}; myObject.brightness = 123; global.set("name-of-object", myObjec…

well all I make is shotty code, and since I'm too lazy to update all of the function nodes I have I'll just try the method stated below the proper way to do it, I'll never learn :sweat_smile: thanks a lot for the answer!

You can also use dot notation in the string. global.set('myObject.brightness', 255) or set the global myObject.brightness in a change node. i.e. [{"id":"a284d8c1.e2dd","type":"inject","z":"8d22ae29.7df6d","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","onc…

I need to pull a global variable using JSON how do I do that global. payload.room = msg.payload.room and add the value of the button that was pressed @Steve-Mcl @E1cid

Global JSON variable

General

zenofmud 30 December 2020 01:36 8

@Zbrooklyn - please don't post the same question in multiple threads. Please do as I said in the other thread - i.e. open a new thread and explain what you are doinf and what you have tried.

Topic		Replies	Views
Using a global variable in the data/json General home-assistant	8	156	20 September 2024
Changing global variable inside the function node General	58	12314	13 March 2019
Creating global variables from JSON object General	7	1497	23 February 2021
JSON global variables in the CHANGE node General function-node	3	323	26 January 2023
Global variable: change specific value inside an array entry General function-node	13	892	26 March 2022

Global JSON variable

Related topics