javascript - how can i test if elements are in json data -

i need check if element in json data.

json data

{     "status": {         "carts": [             {                 "service": "page-mailer",                 "running": "",                 "last success": "2015-05-07 09:35:31"             }         ],         "pages": [             {                 "service": "page-mailer",                 "running": "",                 "last success": "2015-05-07 09:35:31"             }         ],         "actions": [             {                 "service": "page-mailer",                 "running": "",                 "last success": "2015-05-07 09:35:31"             }         ],         "integrations": [],         "service": [             {                 "service": "page-mailer",                 "running": "",                 "last success": "2015-05-07 09:35:31"             }         ],         "smtp": [             {                 "server": "myserver"             }         ],         "servers": []     },     "timing": "2ms" } 

something like,

if(carts){}   if(pages){} etc 

i using jquery getjson();

below should work you

if(data && data.status && data.status.carts){    console.log("exist") }