How to extract a JSON object from the resulting JSON array?

Question

I have the following code to get the results of a query. The query results are in the form of JSON.

$.ajax({
    url: ..... //url//...,
    contentType: "application/json; charset=utf-8",
    data: JSON.stringify({
        "type": "daysofyear",
        "entity": {
            "year": "2015"
        }
    }),
    type: "POST",
    dataType: "json",
    success: function(result) {
        if ((result) && (result.isSuccess == true)) {
            alert("SUCCESS");
            alert(json.entity.day);
        }
    },
});

The returned JSON is:

{
    "isSuccess": true,
    "results": [{
        "jsonClass": "RuleSuccess",
        "message": "Found mapping for year: 2015",
        "rule": {
            "name": "Year rule",
            "metadata": {}
        },
        "entity": {
            "year": "2015",
            "month": "December",
            "day": "Saturday"
        }
    }]
}

Im basically trying to extract the value of month, year, day separately and display them alone using

alert(json.entity.day);

Please advice.

The structure of the data is literally in front of you. You really just have to look at it. What is the issue? Are you not aware that `[...]` represents an array? Where is `json` defined anyway? — Felix Kling, Mar 04 '15 at 19:11

Tushar Gupta · Accepted Answer · 2015-03-04T19:23:40.200

3

Update

var a =JSON.parse('{"isSuccess":true,"results":[{"jsonClass":"RuleSuccess","message":"Found mapping for year: 2015","rule": {"name":"Year rule","metadata":{}}, "entity":{"year":"2015", "month":"December",  "day":"Saturday"}}]}') ;


alert(a.results[0].entity.day);

Original

Use

alert(result[0].rule.entity.day);

edited Mar 04 '15 at 19:23

answered Mar 04 '15 at 19:07

Tushar Gupta

15,504
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`result[0]` - response is in an array – tymeJV Mar 04 '15 at 19:07
@tymeJV: yes was a miss..edited now thanks :) – Tushar Gupta Mar 04 '15 at 19:10
Im getting an error saying result[0] is undefined. – pal Mar 04 '15 at 19:11
@pal: Then `result` is not what you claim it to be. Which is not surprising since you are accessing `result.isSuccess`, but `isSuccess` is not even listed as property in the response example you provided. At this point is completely unclear what the value of `result` is. `json` is not defined either. – Felix Kling Mar 04 '15 at 19:13
Correct @pal please confirm once again :) – Tushar Gupta Mar 04 '15 at 19:15
I updated the Json response. – pal Mar 04 '15 at 19:19
Thanks for the help. I got the answer. It is `alert(result.results[0].entity.day);` – pal Mar 04 '15 at 19:21

ErasmoOliveira · Answer 2 · 2015-03-04T19:13:47.987

0

try this:

obj = JSON.parse(json);
console.log(obj[0].rule.entity.day);

edited Mar 04 '15 at 19:13

answered Mar 04 '15 at 19:08

ErasmoOliveira

1,416
2
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The response is auto-parsed by jQuery since the `dataType` was set to JSON - Also, `obj` is an array, so `obj[0]` – tymeJV Mar 04 '15 at 19:11

How to extract a JSON object from the resulting JSON array?

2 Answers2