Qfyilyi

I want to access a property in a JSON object i'm getting from the wikipedia API.
You can see the object here

{

  "batchcomplete": "",

  "query": {

    "normalized": [

      {

        "from": "baguette",

        "to": "Baguette"

      }

    ],

    "pages": {

      "274152": {

        "pageid": 274152,

        "ns": 0,

        "title": "Baguette",

        "extract": "Une baguette est, dans son sens premier, une tige de bois, de métal, ou de divers autres matériaux ; le mot peut désigner aussi d’autres concepts, notamment par métonymie.nn"

      }

    }

  }

}

What I want is : query -> pages -> 274152 -> extract

I can access this value but the problem is I need to know the '274152' value which changes for every object so I'd like a solution to access it which would work for any number.

So the farthest I can go is obj.query.pages

Any idea ? Thanks

You can use:

var keys = Object.keys(obj.query.pages);

To get array of properties defined in the pages object. Then you can basically do obj.query.pages[keys[i]] to access i-th item in the pages object, for example:

obj.query.pages[keys[0]].extract

Alternatively you can loop over the properties like this:

for (var key in obj.query.pages) {

    if (obj.query.pages.hasOwnProperty(key)) {

        var item = obj.query.pages[key];

        //do something with item

        //item.extract...

    }

}

Assuming the given JSON is a variable data

let uniqueID = Object.keys(data.query.pages)[0];

data.query.pages[uniqueID].extract

Will give you the desired result.

If you just care about the 'extract' part, you can try this:

Object.values(obj.query.pages).map(item => item.extract)

To get a list of all the values