Getting list of usernames from likes in Json - json

Question

If I had the following code below, how would I display the usernames under likes? at the moment I use photo.images.low_resolution.url to show me the urk of the low resolution image but I can't figure out likes section.
{
"data": [{
"location": {
"id": "833",
"latitude": 37.77956816727314,
"longitude": -122.41387367248539,
"name": "Civic Center BART"
},
"comments": {
"count": 16,
"data": [ ... ]
},
"caption": null,
"link": "http://instagr.am/p/BXsFz/",
"likes": {
"count": 190,
"data": [{
"username": "shayne",
"full_name": "Shayne Sweeney",
"id": "20",
"profile_picture": "..."
}, {...subset of likers...}]
},
"created_time": "1296748524",
"images": {
"low_resolution": {
"url": "http://distillery.s3.amazonaws.com/media/2011/02/03/efc502667a554329b52d9a6bab35b24a_6.jpg",
"width": 306,
"height": 306
},
"thumbnail": {
"url": "http://distillery.s3.amazonaws.com/media/2011/02/03/efc502667a554329b52d9a6bab35b24a_5.jpg",
"width": 150,
"height": 150
},
"standard_resolution": {
"url": "http://distillery.s3.amazonaws.com/media/2011/02/03/efc502667a554329b52d9a6bab35b24a_7.jpg",
"width": 612,
"height": 612
}
},
"type": "image",
"filter": "Earlybird",
"tags": [],
"id": "22987123",
"user": {
"username": "kevin",
"full_name": "Kevin S",
"profile_picture": "http://distillery.s3.amazonaws.com/profiles/profile_3_75sq_1295574122.jpg",
"id": "3"
}
},
...]
}

Answer 1

See this jsFiddle. Note the second entry has no data.

Answer 2

Please:
//photo = your object
//Make sure to remove empty objects({...}) as in your code example.
for (var i = 0; i < photo.data.length; i++) {
var photoData = photo.data[i];
for (var x = 0; x < photoData.likes.data.length; x++) {
//Do what ever you want with the like's user...
var likeData = photoData.likes.data[x];
alert(likeData.username);
}
}
And next time use console.log to navigate through your objects: