array containing key-value pair javascript

Question

So I have this "story" array:

 story[0]=[{"_ref":"/hierarchicalrequirement/15475417305","FormattedID":"US79832","Owner":"A","EstCP":0}]
 story[1]=[{"_ref":"/hierarchicalrequirement/15790056238","FormattedID":"US81776","Owner":"B","EstCP":0}]
 story[2]=[{"_ref":"/hierarchicalrequirement/15790059145","FormattedID":"US81777","Owner":"C","EstCP":7.5}]

How do I get the "FormattedID" key of story[2]? I tried:

1. story[2].get("FormattedID")
2. story[2].FormattedID
3. story[2]["FormattedID"]
4. story[2][FormattedID]
5. story[2].getCollection("FormattedID")
6. story[2].get(FormattedID)

None of these works. Any help would be appreciated. Thanks.

possible duplicate of [Access / process (nested) objects, arrays or JSON](http://stackoverflow.com/questions/11922383/access-process-nested-objects-arrays-or-json) — Felix Kling, Jan 29 '14 at 18:54

score 2 · Accepted Answer · answered Jan 29 '14 at 18:48

story[2] is an array with just one entry. You access that entry via [0]. That object has the property, so:

story[2][0].FormattedID

...gives you the value.

This may be clearer with some linebreaks. Here's what you're assigning to story[2]:

story[2]= [ // <== Starts array
    {       // <== Starts object
        "_ref": "/hierarchicalrequirement/15790059145",
        "FormattedID": "US81777",
        "Owner": "C",
        "EstCP": 7.5
    }       // <== Ends object
];          // <== Ends array

So story[2][0] gives us the object:

{
    "_ref": "/hierarchicalrequirement/15790059145",
    "FormattedID": "US81777",
    "Owner": "C",
    "EstCP": 7.5
}

...which has the FormattedID property. You can access that using dot notation and a literal property name (.FormattedID), or using bracketed notation and a string property name (["FormattedID"]).

Oh, I see, each story[i] is an array on its own. Sorry to have missed that. Thanks! — Rohan Dalvi, Jan 29 '14 at 18:50

score 1 · Answer 2 · answered Jan 29 '14 at 18:53

1

Remove the brackets when you are creating your story objects. Then you can get to it as you expect.

Example:

 story[0]={"_ref":"/hierarchicalrequirement/15475417305","FormattedID":"US79832","Owner":"A","EstCP":0}

story[0].FormattedID

With the brackets you are actually creating an array with one item at each spot in your main array.

answered Jan 29 '14 at 18:53

Rick Love

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Rick, that was a representation of the pre-defined array I was looking at. I did not define it that way. – Rohan Dalvi Jan 29 '14 at 20:08

array containing key-value pair javascript

2 Answers2