# Finding value in array of JSON Objects
**URL:** https://discourse.nodered.org/t/finding-value-in-array-of-json-objects/66872
**Category:** General
**Created:** [25 August 2022 01:33 UTC](https://discourse.nodered.org/t/finding-value-in-array-of-json-objects/66872 "2022-08-25T01:33:25Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@TheadehAnank](https://discourse.nodered.org/u/TheadehAnank)
#### Post date: [25 August 2022 01:33 UTC](https://discourse.nodered.org/t/finding-value-in-array-of-json-objects/66872/1 "2022-08-25T01:33:25Z")
Hello - Please advise how to find a specifc value for "sw-a" (see below), and return the value in "zone". I am unable to change the format of the array without causing other issues. I've tried several variations of the following:
> var lookupMatch = arrSB.find(el =\> input === el.in);
where arrSB =
```auto
[
{"id":0,"zone":1,"config":1,"sw-a":452,"sw-b":0,"sw-c":0},
{"id":1,"zone":1,"config":1,"sw-a":454,"sw-b":0,"sw-c":0},
{"id":2,"zone":1,"config":1,"sw-a":448,"sw-b":0,"sw-c":0},
null,
{"id":4,"zone":2,"config":1,"sw-a":464,"sw-b":0,"sw-c":0}
]
```
---
### Author:  [@UnborN](https://discourse.nodered.org/u/UnborN)
#### Post date: [25 August 2022 02:00 UTC](https://discourse.nodered.org/t/finding-value-in-array-of-json-objects/66872/2 "2022-08-25T02:00:26Z")
Try this .. although i dont think you should have an element `null` in your array because when `find()`
loops through the data and reaches `null` it will fail.
```auto
[{"id":"8d11464692374d8f","type":"inject","z":"54efb553244c241f","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"452","payloadType":"num","x":290,"y":1520,"wires":[["8b73380ec5b740bb"]]},{"id":"8b73380ec5b740bb","type":"function","z":"54efb553244c241f","name":"function","func":"let input = msg.payload\n\nlet arrSB = [\n { \"id\": 0, \"zone\": 1, \"config\": 1, \"sw-a\": 452, \"sw-b\": 0, \"sw-c\": 0 },\n { \"id\": 1, \"zone\": 1, \"config\": 1, \"sw-a\": 454, \"sw-b\": 0, \"sw-c\": 0 },\n { \"id\": 2, \"zone\": 1, \"config\": 1, \"sw-a\": 448, \"sw-b\": 0, \"sw-c\": 0 },\n { \"id\": 4, \"zone\": 2, \"config\": 1, \"sw-a\": 464, \"sw-b\": 0, \"sw-c\": 0 }\n];\n\nmsg.payload = arrSB.find(el => el[\"sw-a\"] === input)\n\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":490,"y":1580,"wires":[["06213bc550d2fc17"]]},{"id":"06213bc550d2fc17","type":"debug","z":"54efb553244c241f","name":"debug","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":750,"y":1580,"wires":[]},{"id":"a2fa86fded769230","type":"inject","z":"54efb553244c241f","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"464","payloadType":"num","x":290,"y":1620,"wires":[["8b73380ec5b740bb"]]}]
```
ps. you could do a check and skip that null element
`msg.payload = arrSB.find(el => (el === null) ? false : (el["sw-a"] === input))`
but .. what is it doing there in your data ? 😉
---
### Author:  [@TheadehAnank](https://discourse.nodered.org/u/TheadehAnank)
#### Post date: [25 August 2022 17:52 UTC](https://discourse.nodered.org/t/finding-value-in-array-of-json-objects/66872/3 "2022-08-25T17:52:35Z")
Thank you. I was just getting ready to post a solution to filter out the null data, but your solution is far simplier. I'm not exactly sure how the null data is getting into it. Modifing the source of the data is another can of worms.
---
### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [8 September 2022 17:53 UTC](https://discourse.nodered.org/t/finding-value-in-array-of-json-objects/66872/4 "2022-09-08T17:53:17Z")
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