Iterate through an array of unknown properties to find a specific value in an object

Question

I'm trying to iterate through an array of unknown properties to find a value that exists within a JSON object although there can exist many objects as well, how can I approach this?

  args1 = ['string', 5, 3, { value: 'value', number: 2, token: 'token' }];
  args2 = [
    'string',
    { token: 'token', name: 'name' },
    1,
    3,
    2,
    { book: 'book' },
  ];

How would i be able to find the property token regardless where it exists like the two examples above?

duplicate of https://stackoverflow.com/questions/7364150/find-object-by-id-in-an-array-of-javascript-objects?rq=1 ? — Rmaxx, Jun 28 '22 at 10:25
ForEach item inside the array, check if it is a JS object. If it is an object, check if it hasOwnProperty token. If the object has a property named token, you found it. — Shilly, Jun 28 '22 at 10:25
Yes token would be the value to return once found. I'm doing this approach like @Shilly said by mapping the array and doing argProperty instanceof Object && argValue.hasOwnProperty('token") then I would return argValue.token Not sure if this is the most ideal solution? — BitByte, Jun 28 '22 at 10:36
Although that does seem to give me undefined `argValue instanceof Object && argValue.hasOwnProperty('recaptchaToken') ? argValue.token : " ";` — BitByte, Jun 28 '22 at 10:41
checkout `_lodash.get` -- its the only function I use from lodash anymore and can be loaded without requiring the entire library. — chovy, Jun 28 '22 at 10:48

score 0 · Accepted Answer · answered Jun 28 '22 at 10:42

0

May be something like this:

let args1 = ['string', 5, 3, { value: 'value', number: 2, token: 'token' }];

args1.filter(x=> typeof x==='object').find(y => console.log(y.token));

answered Jun 28 '22 at 10:42

Ashish Patil

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score 0 · Answer 2 · answered Jun 28 '22 at 11:56

Object.assign can turn everything to a single object, and then you can deal with it in a single way:

const findProp = (arr, prop) => Object.assign({}, ...arr)[prop];

var args1 = ['string', 5, 3, { value: 'value', number: 2, token: 'token' }];
console.log(findProp(args1, "token"));

Iterate through an array of unknown properties to find a specific value in an object

2 Answers2