Count number of elements in an array in javascript (not length) - php

Question

I've got an array with different "columns", for example: id, title, date, data etc.
It is a JSON array.
The data element has multiple entries:
"data":["test = test", "2nd test", "3rd test"]
How can I find how many entries there are in the "data" element of the "result" array?
When I try result.data.length, it gives me the whole length, so all the characters.
Here, it would say something like 27, while I want 3 as an answer.
EDIT: this is how I get the elements and push them (I get a JSON array):
$.getJSON("test.php?id=" + id, function(data) {
$.each(data, function(index, data1) {
window.result.push(data1);
});
And this is the test.php code:
if(isset($_GET['id'])){
$id = $_GET['id'];
$liste = getData($id);
$arr = array();
$i = 0;
foreach($liste as $result){
$arr[$i]['id'] = $result->id();
$arr[$i]['titre'] = $result->titre();
$arr[$i]['data'] = $result->listeMot();
$i++;
}
echo json_encode($arr);
Thanks for the help.

Answer 1

The answer was finally found (thanks a lot to #RocketHamzat).
It was indeed a string, and not an array. In that case, I had returns after each pair of words (I thought they were separated by commas, but they weren't).
So, to count, this is what I did:
result.data.split('\r\n').length;
This worked like a charm. Thanks for your help!

Answer 2

I agree with the comments posted - your return object does not look as if it is formatted properly. data should be an object with a key value of the array. Your return should look like the following:
var d = '{"data":["test = test", "2nd test", "3rd test"]}';
console.dir(JSON.parse(d));
var arr = JSON.parse(d);
console.log(arr.data.length);
The console.dir will display the object, and the console.log displays a length of 3.
Are you formatting the response as a JSON string manually? If so wrap with {}
Hope that helps.