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Write a text to the Node RED log

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bartbutenaers edited this page Aug 14, 2018 · 1 revision

A text in the log can provide a user with lots of useful information, which can be a tremendous help in understanding what is going on. To be able to determine the severity of the logged text, a number of log levels are available:

  • fatal: errors which make the application unusable.
  • error: errors which are only fatal for a particular request.
  • warn: problems which are non fatal, so just warn the user.
  • info: information about the normal execution of the application.
  • debug: detailed information (more detail as 'info').
  • trace: very detailed information (more detail as 'debug').
  • off: no log messages at all

The log texts will be written in the Node-RED log. Texts with log level 'error' and 'warn' will also be displayed in the flow editor's debug panel.

The following animation will write a warning 'my warning text' to the console and the debug panel:

blockly_logging

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