JavaScript Json Array Parsing using Backbone

Question

I have the following sample json:

{
    "camp": [
        {
            "name": "Name",
            "data": [
                {
                    "date": "04/08/2014",
                    "value": 1000
                },
                {
                    "date": "05/08/2014",
                    "value": 1110
                }
            ]
        }
    ]
}

Here, I'm able to do: model.get("camp")[0], but when I try: model.get("camp")[0].get("data"), I get the following error:

undefined is not a function

Here model is the standard backbone model which extends Backbone.Model I'm confused what I'm doing wrong !!

What exactly is obj in the first place, what exactly does obj.get() return? — deceze
– deceze ♦, Commented Aug 7, 2014 at 8:39
It would be easy to get them like this obj.camp[0] or obj.camp[0]['data'] — hex494D49
– hex494D49, Commented Aug 7, 2014 at 8:45
When you say you are able to do model.get("camp")[0], what does it give you? (try a console.log with it). Also, what does console.log(model["camp"]); output for you? — musefan
– musefan, Commented Aug 7, 2014 at 8:51

Bart van der Drift · Accepted Answer · 2014-08-07 09:20:14Z

2

You only need to call the model.get() function once. After that, you can treat the returned object just like any other javascript-object. For example, you could do this to get one of the values deep inside the object:

model.get("camp")[0].data[0].value

To achieve what you are trying to get, do this:

model.get("camp")[0].data

edited Aug 7, 2014 at 9:20

answered Aug 7, 2014 at 8:42

Bart van der Drift

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3 Comments

Gerald Schneider Over a year ago

This does not provide an answer to the question. To critique or request clarification from an author, leave a comment below their post - you can always comment on your own posts, and once you have sufficient reputation you will be able to comment on any post.

Getz Over a year ago

@GeraldSchneider: Even if this answer is short, it totally answer the question...

Bart van der Drift Over a year ago

I've expanded my answer to make it more clear. Thanks for bringing this to my attention.

ji_bay_ · Accepted Answer · 2014-08-07 08:43:20Z

1

If you want to acces a property of your json array, you should simply do like this:

var test = json.camp.name

answered Aug 7, 2014 at 8:43

ji_bay_

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2 Comments

musefan Over a year ago

json array? json is just text... you need an object if you want to access any of it

ji_bay_ Over a year ago

yep sorry json is just formated text. But i'm sure you can access properties like i wrote.

Getz · Accepted Answer · 2014-08-07 09:06:54Z

-1

This is how you get your value:

obj.camp[0].data[0]

edited Aug 7, 2014 at 9:06

Getz

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answered Aug 7, 2014 at 8:42

reignsly

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1 Comment

reignsly Over a year ago

Thanks :) Just a newbie.

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