jquery - How to access JSON in JavaScript

Question

How will I access this data in javascript?

[
    {
        "itemData": [
            {
                "Key": "218",
                "Value": "????????"
            },
            {
                "Key": "219",
                "Value": " ????????"
            },
            {
                "Key": "220",
                "Value": " ??????"
            },
            {
                "Key": "221",
                "Value": " ?????"
            },
            {
                "Key": "222",
                "Value": " ?????"
            },
            {
                "Key": "223",
                "Value": " ?????"
            },
            {
                "Key": "224",
                "Value": " ??????"
            },
            {
                "Key": "225",
                "Value": " ???? ????"
            },
            {
                "Key": "226",
                "Value": " ??"
            },
            {
                "Key": "227",
                "Value": " ????????"
            },
            {
                "Key": "228",
                "Value": " ??????"
            },
            {
                "Key": "229",
                "Value": " ????? ???"
            },
            {
                "Key": "230",
                "Value": " ???"
            },
            {
                "Key": "231",
                "Value": " ????"
            },
            {
                "Key": "232",
                "Value": " ?????"
            },
            {
                "Key": "233",
                "Value": " ??????"
            }
        ]
    }
]

I used AJAX in JSON format. I tried access JSON like:

success: function (data) {
    $.each(data.d[0].itemData, function (index, element) {
        alert( data.d[0].itemData[index].key);
    })
}

but not getting output.

Answer 1

There is no d property in your JSON, so you can simply access data[0].itemData. Try this:

$.each(data[0].itemData, function (index, element) {
    console.log(element.Key);
})

Example fiddle