JavaScript Parsing Nested JSON Arrray

Question

I have the following JSON.

It is the coordonates of differents points (x,y,w,h). I need to parse this JSON with hashmap? Array? Will need coordinate for each point to use later.

How can I proceed?

{ "_id" : "543e95dddedd",
  "result" : [ [ "Point1",
        [ [ 22,
            32,
            444,
            4444
          ] ]
      ],
      [ "point2",
        [ [ 43,
            112,
            442,
            344
          ],
          [ 34,
            34,
            1246,
            44
          ]
        ]
      ]
    ]
}

With this, I can display the JSON correctly in "points":

app.get('/id/:id', function (req, res){
  return Coordonate.findById(req.params.id, function (err, points) {
    if (!err) {
      return res.send(points);
    } else {
      return console.log(err);
    }
  });
});

Thanks for you help!

I would say an array with point and coordinates. or hashmap could be more efficient? point1 22 32 444 444, point2 43 112 442 344, point2 34 34 1246 44 — Carlos
– Carlos, Commented Oct 24, 2014 at 8:46

wintenbb · Accepted Answer · 2014-10-24 08:53:42Z

1

Let's say your JSON is stored in obj variable.

var points = {}
for (var i in obj.result){
    var pointName =  obj.result[i][0];
    var coordinates = obj.result[i][1];
    points[pointName] = coordinates;
}

console.log(points);

answered Oct 24, 2014 at 8:53

wintenbb

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2 Comments

Carlos Over a year ago

Thanks, it's works fine but at the end I have a strange error like: [ 34, 34, 1246, 44 ] ], undefined: undefined, r: 'e' }

wintenbb Over a year ago

Then, you did not show us the totallity of your JSON, it must contains weirds values after the ones you show us.

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