Tips for accurately determining the count, rather than the character length, of JSON data

After running my code, I believe it returns a JSON array. The resulting JSON array is then stored in a JavaScript variable called 'result'. When I

console.log(result); 

in Firefox, the output shown is:

[{"id":"G24","value":"Zas, S"},{"id":"G75","value":"Wara, TS"},{"id":"G48","value":"Jala, S"}]

This has been validated on jsonLint to confirm that it is indeed correct JSON.

In my code, when I attempt to count the number of elements in the array with this code snippet:

var key, count = 0;
for(key in result) 
{
  count++;
}
console.log("The count of results is:" + count); 

The output displayed is 94, which represents the length/character count of the array - [the example output above has been modified]

However, within the JSON tab in Firefox, it displays the results as an array of objects:

0   Object { id="G24", value="Zas, S"}
1   Object { id="G75", value="Wara, TS"}
2   Object { id="G48", value="Jala, S"}

I have also tried using different code snippets from various sources including 'stackoverflow' resources

for ( property in result )
{
   if(result.hasOwnProperty(property))
   {
     count++;
   }
}

Yet, the outcome remains the same. How can I accurately iterate over this array or array of objects or string, and determine the count? Any guidance would be greatly appreciated. Thank you.

Answer №1

It appears that your HTTP response is returning a JSON document.

In the JSON tab, it displays the data as JSON format.

If you're simply extracting the text from the response in your code, you'll need to convert it into JavaScript objects by parsing the JSON.

Make sure to use JSON.parse and consider utilizing json2.js for older browser support.

Answer №2

To properly handle the JSON data, you need to convert it into a JavaScript Array.

data = JSON.parse(data); // JSON data is now transformed into an array
console.log(data.length) // You can now access the desired information

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