Function Code Help in concatenating

General
1

I need a liitle help in converting the below Change node to a function node.
I have many such nodes to be deployed, and hence would like to know how to do it using a function node, where replication and correction is easier.

the below change node is working for me, however, i need 20 of such nodes to be deployed and if i have to change a little i need to do that again for all those nodes..

requirement; concatenate several payloads into a string by adding a delimitor and a line break after every three payload.
I am using a change node with Jsonata with following expression and it works.

payload[0].M00&"-"&payload[1].M00&"-"&payload[2].M00 &'<br>'&payload[3].M00&"-"&payload[4].M00&"-"&payload[5].M00 &'<br>'&payload[6].M00&"-"&payload[7].M00&"-"&payload[8].M00 &'<br>'&payload[9].M00&"-"&payload[10].M00&"-"&payload[11].M00 &'<br>'&payload[12].M00&"-"&payload[13].M00&"-"&payload[14].M00

Inject node with example data

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2

You could simply link call to the change node or function node or template node. then you would only need to edit one node.

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call","z":"d1395164b4eec73e","name":"","links":["df2ac56e3f59eacc"],"linkType":"static","timeout":"30","x":490,"y":5980,"wires":[["37e8274009b7e6a0"]]},{"id":"37e8274009b7e6a0","type":"debug","z":"d1395164b4eec73e","name":"debug 2558","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":670,"y":5980,"wires":[]},{"id":"301a4a0e6e49af13","type":"debug","z":"d1395164b4eec73e","name":"debug 2557","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":650,"y":5920,"wires":[]},{"id":"df2ac56e3f59eacc","type":"link in","z":"d1395164b4eec73e","name":"concat_node","links":[],"x":175,"y":5820,"wires":[["b0126124c78c8e09"]]},{"id":"b0126124c78c8e09","type":"change","z":"d1395164b4eec73e","name":"","rules":[{"t":"set","p":"payload","pt":"msg","to":"payload[0].M00&\"-\"&payload[1].M00&\"-\"&payload[2].M00 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Concat in a function uses + so simply change & to + and add msg. to your vars, but this is the perfect job for a template node.

[edit]
Or a lowcode way, with two split and join nodes. You can even pass the property key you wish to use.

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2 Likes
3

Thank you!!

4

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