This procedure counts 4 array elements with 16 attributes per element:
var obj = [{ "id": "38", "article_id": "16", "news_event": "625", "language": "en", "channel_partner_id": "625", "title": "Test", "show_logo": null, "description": "test\n\n", "schedule": null, "event_date": "2012-03-09 10:08:35", "link_text": null, "guid": null, "timestamp": "2012-03-09 11:19:42", "website": null, "show_hours": null, "page_text": null }, { "id": "37", "article_id": "15", "news_event": "625", "language": "en", "channel_partner_id": "625", "title": "Test", "show_logo": null, "description": "test\n\n", "schedule": null, "event_date": "2012-03-09 10:08:35", "link_text": null, "guid": null, "timestamp": "2012-03-09 11:19:39", "website": null, "show_hours": null, "page_text": null }, { "id": "36", "article_id": "14", "news_event": "625", "language": "en", "channel_partner_id": "625", "title": "Test", "show_logo": null, "description": "test\n\n", "schedule": null, "event_date": "2012-03-09 10:08:35", "link_text": null, "guid": null, "timestamp": "2012-03-09 11:19:35", "website": null, "show_hours": null, "page_text": null }, { "id": "35", "article_id": "13", "news_event": "625", "language": "en", "channel_partner_id": "625", "title": "Test", "show_logo": null, "description": "test\n\n", "schedule": null, "event_date": "2012-03-09 10:08:35", "link_text": null, "guid": null, "timestamp": "2012-03-09 11:19:31", "website": null, "show_hours": null, "page_text": null}] for (var i = 0; i < obj.length; i++) { var ctr=0; for (attr in obj[i]) ctr++; alert('array['+i+']: ' +ctr); }