extract specific data from JSON using JavaScript

Dealing with JSON data can be tricky, especially when working with multiple sets of information to choose from.

When I inspect the data in my JavaScript code using

console.log(contacts.data["all"]);
, I can see the returned objects clearly.

Here's a sample of what the output looks like:

0: Object
allowanyoneedit: "True"
allowedit: "1"
charindex: "A"
country: "AF"
email: "xx@xx"

Among all the data available, my goal is to extract the email information only.

For instance, if the data includes:

0: Object
allowanyoneedit: "True"
allowedit: "1"
charindex: "A"
country: "AF"
email: "xx@xx"
1: Object
allowanyoneedit: "True"
allowedit: "1"
charindex: "A"
country: "AF"
email: "zz@xx"

and I specifically want to retrieve the 1st object's details from the JSON data, how would I achieve this using JavaScript?

=========================edit=========================

This section demonstrates how I am handling and processing the data array:

for (var x in companies) {
        var company = companies[x];
        var opt = $("<option>").attr({ value: company.id }).text(company.name);
        $("#contactcompany").append(opt);
        console.log(company);
        //$("#txtEmailTo").val();
        console.log(contacts.data["all"]);

In the example scenario, there are a total of 5 objects in the array.

========================edit 2==============================
Data += "{"
                For Each item In Columns.Split(",")
                    Dim Val As String = FormatJS(myReader(item).ToString)
                    If Val <> "" Then Data += """" & item.ToLower & """:""" & Val & ""","
                Next
                If CBool(myReader("AllowEdit").ToString) = True Then
                    Dim Val As String = FormatJS(myReader("AllowEdit").ToString)
                    If Val <> "" Then Data += """allowedit"":""" & Val & """"
                End If
                If Data.EndsWith(",") Then Data = Data.Remove(Data.Length - 1)
                Data += "},"

Answer №1

Suppose we have a JSON structure as follows:

var info = {
    0: {
        "allowanyoneedit": true, 
        "allowedit": 1, 
        "charindex": "A", 
        ...
    }, 
    1: {
    ...
    }
}

In this case, you can fetch the data from key "1" by using:

console.log(info["1"]);

This will display the contents of key "1", including the email address:

console.log(info["1"]["email"])

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