Question

I have a JSON data

[
    {
        "Name": "Tom",
        "Email": "[e-mail]",
        "Notes": "Yea, it's good",
        "Ratings": "5",
        "Messages": [
            "Tom - I am good",
            "System - How're you doing?",
            "Tom - True, that!",
            "System - Oh Yes! ;) "
        ]
    },
    {
        "Name": "Sunny",
        "Email": "[e-mail]",
        "Notes": "Yea, it's good",
        "Ratings": "2",
        "Messages": [
            "Sunny-I am good",
            "System - How're you doing?",
            "Sunny - True, that!",
            "System - Oh Yes! ;) "
        ]
    }
]

I am parsing it using jQuery and iterating it like this;

            var jsonData = $("#jsonData").val();
            var plainData = $.parseJSON(jsonData);

            for (var j = 0; j < plainData.length; j++) {
                var Name = plainData[j].Name;
                var Email = plainData[j].Email;
                var Notes = plainData[j].Notes;
                var Ratings = plainData[j].Ratings;

                var Messages = plainData[j].Messages;
                var _messages = " ";
                for (var i = 0; i < Messages.length; i++)
                    _messages += Messages[i] + "\n";

            }

I’m not too sure if iterating this in a for loop is a good idea. Could anyone please suggest me a better/optimized way to iterate the parsed json value?

Answer 1

The way you’re doing it just now is the most efficient way to do it, except:

var Messages = plainData[j].Messages;
var _messages = " ";
for (var i = 0; i < Messages.length; i++)
    _messages += Messages[i] + "\n";

Could also be written better as :

_messages = plainData[j].Messages.join('\n') + '\n';