Ok, I am a beginner and was just wondering that if i have 3 different injects(day,month year) and want to make a function to take these data from all these different payloads and when all 3 are clicked give output ad a complete date(dd/mm/yyyy). So is this even possible? And if yes please do help.
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Yes, it is possible but it isn't really the "Node-RED way".
To do it, you need to save all 3 inputs to flow or global variables then you can use a function node or a change node (using JSONata) to join them together.
You might want to ask yourself however, why use 3 injects that force you to join stuff together when you could have 1 inject with all 3 pieces of information together?
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Thanks for the help. Is there any resource where I can learn how to use node red perfectly? I am very much beginner and want to learn it perfectly.
Here another alternative to the first solution.
The join node will create an object with the three input (and every time an input is entered). The template node will create a string from the object.
[{"id":"be0fcc2e.ef7c8","type":"tab","label":"Flow 1","disabled":false,"info":""},{"id":"5f1a0900.abc798","type":"inject","z":"be0fcc2e.ef7c8","name":"","topic":"day","payload":"DD","payloadType":"str","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":150,"y":140,"wires":[["7f8bf4df.da9fac"]]},{"id":"a243ee87.0a727","type":"inject","z":"be0fcc2e.ef7c8","name":"","topic":"month","payload":"MM","payloadType":"str","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":160,"y":180,"wires":[["7f8bf4df.da9fac"]]},{"id":"3ae58f90.3d478","type":"inject","z":"be0fcc2e.ef7c8","name":"","topic":"year","payload":"YY","payloadType":"str","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":150,"y":220,"wires":[["7f8bf4df.da9fac"]]},{"id":"7f8bf4df.da9fac","type":"join","z":"be0fcc2e.ef7c8","name":"","mode":"custom","build":"object","property":"payload","propertyType":"msg","key":"topic","joiner":"\\n","joinerType":"str","accumulate":true,"timeout":"","count":"3","reduceRight":false,"reduceExp":"","reduceInit":"","reduceInitType":"","reduceFixup":"","x":330,"y":180,"wires":[["c24145ec.a8aab8"]]},{"id":"84855f1a.3180f","type":"debug","z":"be0fcc2e.ef7c8","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","x":610,"y":180,"wires":[]},{"id":"c24145ec.a8aab8","type":"template","z":"be0fcc2e.ef7c8","name":"","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"{{payload.day}}/{{payload.month}}/{{payload.year}}","output":"str","x":460,"y":180,"wires":[["84855f1a.3180f"]]}]
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