JSON.parse parsing JSON with nested objects

Question

I'm attempting to parse a JSON string with nested objects received in the response of a post request. After running `JSON.parse(responseText)`, the result is in the following format: ``` [{ "atco":"43000156407", "location":{ "longitude":"-1.7876500000000000", "latitude":"52.4147200000000000"," timestamp":"2013-03-19 11:30:00" }, "name":"Solihull Station Interchange", "road":"STATION APPROACH", "direction":"NA", "locality":"Solihull", "town":"Solihull"}, ... ``` I thought I would then be able pull values out using the following as an example, but all I get is undefined. ``` var atco = json[0].atco; ``` I've also tried `json[0][0]` but that returns an individual character from the JSON (`[`) . Does this indicate the JSON hasn't parsed correctly, or is this expected behaviour and I'm just referencing incorrectly?

Accepted Answer

This means that your JSON is being double encoded. Make sure you only encode it once on the server.

As proof, after you've parsed it, parse it again.

```
var parsed = JSON.parse(resposneText);

var parsed2 = JSON.parse(parsed);

alert(parsed2.atco);
```

Either that, or you're parsing it but then trying to select the data from the original string. This would obviously not work.

JSON.parse parsing JSON with nested objects

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