How to select a field inside an array inside an object in Javascript [duplicate]

Question

I have array of object like this :

I need to select only the array which has coreSystemID = 'T24' so I tried credsArr.find() it shows my .find is not a function.

below is my code:

var creds = credsArr.find(x => x.coreSystemID === 'T24')

And I should use the index value like this - credsArr[3053], because the index may vary so I need to select the array which has coreSystemID = 'T24'

credsArr is an object, not an array, the same for its values, 3052 and 3053... — Calvin Nunes
– Calvin Nunes, Commented Dec 2, 2019 at 11:37
If you don't need the key (3053): Object.values(credsArr).find(cred => cred.coreSystemID === "T24") — user5734311
– user5734311, Commented Dec 2, 2019 at 11:41

kooskoos · Accepted Answer · 2019-12-02 12:05:36Z

2

let keys = Oject.keys(credsArr).filter(key => credsArr[key].coreSystemID==='T24')

keys will have all the keys of credsArr having credsArr[key].coreSystemID as 'T24'

let systemT24 = credsArr[keys[0]] will give you the object you are looking for given that there is only one object with coreSystemID as 'T24'.

If you have multiple objects that might have coreSystemID as 'T24' you can map it to a new array like this:

let systemT24 = keys.map(key => credsArr[key])

edited Dec 2, 2019 at 12:05

answered Dec 2, 2019 at 11:42

kooskoos

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2 Comments

Mar1009 Over a year ago

i'm gettign output as like this - 0: "3053"... Can you assist by selecting the all element in this array "3053"?

kooskoos Over a year ago

@Mar1009 Check out the modified answer.

Oleg Levin · Accepted Answer · 2019-12-02 11:46:30Z

1

You can use Object.values(credsArr):

 var creds = Object.values(credsArr).find(x => x.coreSystemID === 'T24');

or if you need key of the object:

var creds = Object.entries(credsArr).find(x => x[1].coreSystemID === 'T24');
let key = creds[0];
let value = creds[1];

edited Dec 2, 2019 at 11:46

answered Dec 2, 2019 at 11:44

Oleg Levin

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1 Comment

Mar1009 Over a year ago

it says Object.values is not a function is not a function

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