Hy all, I am relatively new to NodeRED and tinker around with function nodes. As I wasn't to sure about the flow context concept, I tried to add debug lines into my node's OnStartup, but they nowhere appeared in the debug window. Although I use the selected node context, debug messages from the s…

Welcome to the forum @NodeWrangler [image] NodeWrangler: I tried to add debug lines into my node's OnStartup What sort of debug lines? If you mean you used console.log() then possibly they do not appear in the debug pane because they are run before node-red is fully started so the output ge…

Thanks for chiming in. I ment node.log() statements. But it makes sense, they might not show up as NR is no started fully yet, when they are started.

If you use console.log() and look in the log as I suggested and it should be ok. I don't know what node.log() will do in this situation.

node.log does not write to the debug sidebar at any time. It only writes to the console log. You can use node.warn to write to the debug sidebar at any time. There have been discussions in the past on giving the Function node a better logging API for the debug sidebar (rather than having to log ev…

[image] knolleary: But not come to any final conclusion or contribution to make it so. Is there a design discussion somewhere that people could contribute to?

Thanks for clarifying this issue.

Node-RED

Node-RED Forum

Function node's OnStart - no logging possible?

General

knolleary 2 October 2022 11:13 7

I think this was the last discussion on it 📋 Survey: logging to debug sidebar

Topic		Replies	Views
How to debug a function Node? Feature Requests	15	20093	24 February 2021
📋 Survey: logging to debug sidebar General	23	5899	8 April 2020
Make node.log or RED.log available in the function node Feature Requests	4	1492	11 May 2022
Node.debug in function node code General	3	896	8 September 2020
Debugging function General	7	31118	19 October 2024

Copyright OpenJS Foundation and Node-RED contributors. All rights reserved. The OpenJS Foundation has registered trademarks and uses trademarks. For a list of trademarks of the OpenJS Foundation, please see our Trademark Policy and Trademark List. Trademarks and logos not indicated on the list of OpenJS Foundation trademarks are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.

Function node's OnStart - no logging possible?

Related topics