Hello, I am setting up a flow for automating my greenhouse using a pi 3. I have some prior experience coding in Qt c++ but it has been a few years... I want to return 'true' or 'false' to operate a switch but due to my lack of coding skills 'result' ends up 'undefined' and msg.payload returns 'un…

Try: //gets the temp and humidity reading from the DHT11 var hum = msg.humidity; var tmp = msg.payload; var result; setInterval(function(){ var hour = new Date().getHours(); if (hour >= 8 && hour < 18) { controlMister(); } }, 1000*60); function controlMister(){ if(hum < 60…

How do you use code tags on this forum? Jon

[image] How to share code or flow json FAQs To share code samples or flow json in this forum, you need to take care to format it properly so that it is displayed correctly. The easiest way to do that is to click the 'Preformatted Text' button in the toolbar: [image] The…

Thank you! Works as intended! Cheers, Jon

Why is 'result' (which I assumed was a global since I added it outside the function) data not maintained/exposed outside of the function?

result is a node local var, if you need a global, you have to use global.get() and global.set(). https://nodered.org/docs/writing-functions#storing-data ... and in your case here when leaving the function node, result isn't set.

AHA! Thank you very much. Cheers, Jon

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Code question from a dopey newbe[solved]

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knolleary 22 July 2018 15:50 3

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Code question from a dopey newbe[solved]

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