How do I access the responses/response ID's in this JSON string with javascript?

Question

Hi guys I am using parseJSON to parse this JSON string:

json = [
  {
    "Answers": [
      {
        "Responses": [

        ],
        "AnswerID": 1,
        "AnswerText": "Green"
      },
      {
        "Responses": [
          {
            "ResponseID": 1,
            "RespondingUser": null,
            "ResponseDate": "\/Date(1351694241577)\/"
          },
          {
            "ResponseID": 2,
            "RespondingUser": null,
            "ResponseDate": "\/Date(1351694245093)\/"
          }
        ],
        "AnswerID": 2,
        "AnswerText": "Blue"
      }
    ],
    "QuestionID": 1,
    "QuestionText": "Favourite colour?",
    "ClosingDate": "\/Date(1351953058527)\/",
    "AskingUser": null
  }
]

var result = jQuery.parseJSON(json);

but how do I get the responses/response ID's out of 'result' now? Any help would be greatly appreciated!

That is not a JSON string, it is a Javascript object. – Steve Wellens Oct 31 '12 at 16:04 — Steve Wellens, Oct 31 '12 at 16:04

score 2 · Accepted Answer · answered Oct 31 '12 at 15:50

2

[ ] = array

{ } = object

You have an array, lose the wrapping square brackets.

alert(json.Answers[0].AnswerText) = "Green"

answered Oct 31 '12 at 15:50

Diodeus - James MacFarlane

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If "responses" are supposed to all be a children of "answers" then there's something wrong with your JSON structure. – Diodeus - James MacFarlane Oct 31 '12 at 15:56
Hi thanks for your answer! - What is wrong with responses? I guess this could be a more serious problem? – Joe Oct 31 '12 at 15:59
The first "responses", child of "answers" is empty, then later you declare another "responses" outside of this structure. – Diodeus - James MacFarlane Oct 31 '12 at 16:01
Did you run the JSON through jsonlint to verify it? – Ryan Griggs Oct 31 '12 at 16:02
The structure is valid, but is not self-consistent. – Diodeus - James MacFarlane Oct 31 '12 at 16:03

score 1 · Answer 2 · edited Oct 31 '12 at 16:18

1

You should be able to use the for-in loop:

 for (i in result[0].Answers)
 {
    // do something with result[0].Answers[i].Responses
 }

Is this what you're looking for?

edited Oct 31 '12 at 16:18

Emil Ivanov

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answered Oct 31 '12 at 15:47

Ryan Griggs

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Why the "not useful" vote? did I do something wrong? – Ryan Griggs Oct 31 '12 at 15:51
result is still alerts as null :/ – Joe Oct 31 '12 at 16:16

Emil Ivanov · Answer 3 · 2012-10-31T16:18:41.723

1

for (var a in result[0].Answers) {
    result[0].Answers[a].AnswerID // Do something with it.
}

edited Oct 31 '12 at 16:18

answered Oct 31 '12 at 15:48

Emil Ivanov

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I actually think 'a' would be an index within the result[0].Answers[] array. You would reference it like this: 'result[0].Answers[a]' – Ryan Griggs Oct 31 '12 at 16:00

How do I access the responses/response ID's in this JSON string with javascript?

3 Answers3