Attempting to retrieve an item from a JSON array of objects results in the value of "Undefined"

Question

Attempting to retrieve an item from a JSON array of objects results in the value of "Undefined"

I am currently working with a Blockspring API that pulls data from a Google Sheet in the form of a JSON array. However, I am encountering an issue where I receive an "undefined" value when trying to access an object within the array. I have included both the code snippet and the console log output for reference. Any insights on why this might be happening would be greatly appreciated.

blockspring.runParsed("query-public-google-spreadsheet", { "query": "SELECT A, B, C", "url": 
    "https://docs.google.com/spreadsheets/d/1ZYvcYf_41aghdXRSpg25TKW4Qj9p1Lpz92b1xG-9R1Q/edit?usp=sharing"}, 
    { "api_key": "br_50064_1fe91fe1478ef990dc8b5e9b4041c2c476670306" }, function(res){  
        var obj=res.params;
        console.log(obj);
        var temp=obj[0];
        console.log(temp);
    }

https://i.sstatic.net/wPf43.jpg

javascript arrays json object

Answer 1

Answer №1

To access the initial element of an array, make sure to utilize obj.data[0].

Upon reviewing your console output, it appears that the data property of obj is missing.

There is no property named 0 in Object obj, resulting in a return value of undefined.

Answer 2

To access the initial element of an array, make sure to utilize obj.data[0].

Upon reviewing your console output, it appears that the data property of obj is missing.

There is no property named 0 in Object obj, resulting in a return value of undefined.

Answer 3

Answer №2

Although I would like to experiment with it myself, it seems clear that the issue lies in how you are accessing the information.

Instead of treating the object like an array with var temp=obj[0], try accessing the data this way:

//retrieve the actual array
JSONArray theArray = obj.getJSONArray("data"); //I believe it is stored in an array called data... could be that the obj is just fine
// now get the first element:
JSONObject firstItem = theArray.getJSONObject(0);
// and so on
String name = firstItem.getString("Name"); // A

You should be able to access it using var temp = obj.data[0];

Answer 4

Although I would like to experiment with it myself, it seems clear that the issue lies in how you are accessing the information.

Instead of treating the object like an array with var temp=obj[0], try accessing the data this way:

//retrieve the actual array
JSONArray theArray = obj.getJSONArray("data"); //I believe it is stored in an array called data... could be that the obj is just fine
// now get the first element:
JSONObject firstItem = theArray.getJSONObject(0);
// and so on
String name = firstItem.getString("Name"); // A

You should be able to access it using var temp = obj.data[0];

Attempting to retrieve an item from a JSON array of objects results in the value of "Undefined"

Answer №1

Answer №2

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