Introduction to json data

The json data is the data format returned in the form of key-value pairs
{//here is jsonObject
    "programmers" //here is the key of jsonArray
: [//here is the value of jsonArray
{
        "firstName": "Brett",
        "lastName": "McLaughlin",
        "email": "aaaa"
    }, {
        "firstName": "Jason",
        "lastName": "Hunter",
        "email": "bbbb"
    }, {
        "firstName": "Elliotte",
        "lastName ": "Harold",
        "email": "cccc"
    }
]
}