Retrieve the value of an object without relying on hardcoded index values in TypeScript

I am working with an object structure retrieved from an API response. I need to extract various attributes from the data, which is nested within another object. Can someone assist me in achieving this in a cleaner way without relying on hardcoded indices?

{
"objects": [
    {
        "id": "2132",
        "type": "year",
        "name": "product",
        "Version": "0.3",
        "data": {
            "CTimestamp": "2018-08-15T21:53:52+00:00",
            "createdBy": "abc",
            "CYCreateTimestamp": "2018-08-15T21:53:52+00:00",
            "Code": "HO",
            "Abbreviation": "xyz",
            "Description": "abcd",
            "cycleYearIdentifier": 2132,
            "id": "2132"
        }
    }
],
"pages": {
    "totalPages": 1,
    "totalResources": 1
}

}

I am specifically looking to retrieve the 'code' key from the "data" object under "objects" - without hardcoding any index values. Let's assume that the complete result is stored in a variable named result or response. As a beginner in JavaScript, I hope to find something similar to Python dictionaries where we can use .get method to fetch values using keys if they exist.

Expected outcome : "HO"
for this particular API response.

javascripttypescript

Answer №1

To retrieve the desired value, you can utilize optional chaining:

const result = response?.objects?.[0]?.data?.Code

This approach will provide you with the specified value or return undefined if any key/index along that chain is missing.

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