JSON is returning an array of numbers instead of the value in an object within the JSON

Question

I'm trying to go through this JSON object and grab some values out of it.

let currentPage = "
{
    "sys": {
        "space": {
            "sys": {
                "type": "Link",
                "linkType": "Space",
                "id": "xaswoie0ncrg"
            }
        },
        "id": "7lqAYzwP92G9TMDBUVnadp",
        "type": "Entry",
        "createdAt": "2020-07-30T18:08:33.159Z",
        "updatedAt": "2020-07-30T18:22:50.276Z",
        "environment": {
            "sys": {
                "id": "master",
                "type": "Link",
                "linkType": "Environment"
            }
        },
        "revision": 2,
        "contentType": {
            "sys": {
                "type": "Link",
                "linkType": "ContentType",
                "id": "landingPage"
            }
        },
        "locale": "en-US"
    },
    "fields": {
        "pageTitle": "Leading the next generation of renewable fuels",
        "heroImage": {
            "sys": {
                "type": "Link",
                "linkType": "Asset",
                "id": "vnjfnYzSyhqOjKlmNmBGb"
            }
        },
        "pageZone": [
            {
                "sys": {
                    "type": "Link",
                    "linkType": "Entry",
                    "id": "3aQvORUYowW0SoofuvHUov"
                }
            },
            {
                "sys": {
                    "type": "Link",
                    "linkType": "Entry",
                    "id": "Qfj1hNJ9euSkBcAQEDaN5"
                }
            }
        ]
    }
}"

I then parse the JSON:

let currentPage2 = JSON.parse(currentPage);

Now here's the issue. If log this in the console:

console.log(Object.keys(currentPage2.fields.pageZone[0].sys.id));

Node returns this in the terminal:

[
  '0',  '1',  '2',  '3',  '4',
  '5',  '6',  '7',  '8',  '9',
  '10', '11', '12', '13', '14',
  '15', '16', '17', '18', '19',
  '20', '21'
]

I want to use this:

console.log(Object.keys(currentPage2.fields.pageZone[0].sys.id).value);
//with expected value of "3aQvORUYowW0SoofuvHUov"

Instead, it returns undefined. I have no idea why this is happening. I have tried using JSON.stringify etc and parsing it again, but it still behaves this way.

just use console.log(currentPage2.fields.pageZone[0].sys.id) — catcon
– catcon, Commented Aug 5, 2020 at 23:56

Unmitigated · Accepted Answer · 2020-08-05 23:56:19Z

3

Just use currentPage2.fields.pageZone[0].sys.id. There is no need for Object.keys at all, unless you want each index of the string.

answered Aug 5, 2020 at 23:56

Unmitigated

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2 Comments

Anthony Schanen Over a year ago

God, simple error. I was using this for another purpose and ended up copying it. Thanks for that.

Unmitigated Over a year ago

@AnthonySchanen No problem.

Seblor · Accepted Answer · 2020-08-05 23:56:16Z

1

currentPage2.fields.pageZone[0].sys.id is a string, and since Object.keys will interpret the string as an iterable, the keys will be the indexes of each characters.

answered Aug 5, 2020 at 23:56

Seblor

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