Attempting to perform JSON parsing, but encountering issues with the syntax of the string returned from the server

Having trouble returning a string from my server that needs to be parsed into a JavaScript object. However, encountering errors during the parsing process and unable to figure out why. Perhaps there is something I'm missing.

The format of my string is as follows:

{{"fname":"bob","lname":"jones"},{...}}

My intention was to parse it like this:

var item = JSON.parse(myString);

This should create an array of names in 'item', allowing me to do something like:

for(var i = 0; i < item.length; i++){
    alert(item[i].fname + " " + item[i].lname);
}

Could you point out if there's any mistake in the above approach? The following snippet shows actual code being used:

while (reader.Read())
{
    if (reader["rt_id"] != DBNull.Value && reader["rt_name"] != DBNull.Value)
    {
          t = @"{""pValue"":""{ReportType},"+reader["rt_id"]+@""",""pText"":"""+reader["rt_name"]+@"""}";
          returnContentsArray.Add(t);
    }
}
returnContents = "{" + String.Join(",",returnContentsArray.ToArray()) + "}";
return returnContents;

On Client-side:

var item = JSON.parse(result); 

Answer №1

The provided string does not conform to the JSON format. The empty braces {} denote an object that requires keys. If you intend to create an array, consider using square brackets [].

returnContents = "[" + String.Join(",",returnContentsArray.ToArray()) + "]";

Answer №2

Ensure that you are utilizing the proper JSON format. It seems like the correct format you should use is

[{"fname":"bob","lname":"jones"},{...}]

This format will provide you with an array of objects. Before making any changes to your JavaScript code, it's important to validate the JSON using tools like JSONLint.

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