Array - last value

[Moach2000]

Hi! I get some data via API (battery status) into my Node-Red.
The data has an array - up to 99 arrays and each of this array contains 4 values [0]...[3].
I want to get the value from the latest array [80] out of 80 or [65] out of 65 and always value "3".

How can I do this?
Br

[Steve-Mcl]

Off the top of my head, a function node with...

msg.payload = msg.payload[msg.payload.length-1][3]
return msg

...should work (untested)

assuming the array is in msg.payload

[Moach2000]

Hi @Steve-Mcl !
I guess, this was the solution.

Again what I did:
Function node plus your mentioned lines:

> msg.payload = msg.payload.xx.yy[msg.payload.xx.yy.length-1][3];
return msg;

Remark:
xx.yy --> its a part of my payload/array where I get the data.

I'll check the changes during the next hours and let keep you informed!
Thank you and all the best!
Cheers

[Paul-Reed]

@Moach2000 - Whenever you post code in the forum, to make code readable and usable it is necessary to surround your code with three backticks (also known as a left quote or backquote ```)

``` 
   code goes here 
```

You can edit and correct your post by clicking the pencil icon.

See this post for more details - How to share code or flow json