Parse JSON in children element in order

Question

Here is the JSON example:

jsonData:

{ "Device": { "Content": { "UL": { "index0": "12", "index1": "1", .... "index31": "5", } } } }

This is what I tried, but it didn't work:

var index = [];
var jsonDoc = JSON.parse(data);
for(var i =0; i<32 ; i++)
{
  var $arr = "index"+i;
  index.push( jsonDoc.Device.Content.UL.$arr);
}

How can I extract the index from 1 to 31 and put it in the index array?

Duplicate of http://stackoverflow.com/questions/7102704/how-to-use-variables-in-dot-notation-like-square-bracket-notation - sorry about the commas above — mplungjan, Feb 01 '16 at 06:34
Duplicate of http://stackoverflow.com/questions/4255389/javascript-object-notation-with-variable — mplungjan, Feb 01 '16 at 06:41
Explanation: http://stackoverflow.com/questions/20736758/difference-between-dot-notation-and-bracket-notation-in-javascript — mplungjan, Feb 01 '16 at 06:42

score 1 · Answer 1 · answered Feb 01 '16 at 06:31

1

You can access hashes with the [] operator as well:

index.push( jsonDoc.Device.Content.UL[$arr]);

answered Feb 01 '16 at 06:31

Gavriel

@mplungjan, it has an explanation and a solution with working code. What do you miss? – Gavriel Feb 01 '16 at 06:35
Huge duplicate and already answered in my comment - I know you did not see it but should be closed – mplungjan Feb 01 '16 at 06:37
@Gavriel this the only way to access values when you have key reference in a var. `key[var]`. – Jai Feb 01 '16 at 06:37
@Jai, right, the "as well" I meant that jsonDoc["Device"]["Content"]["UL"][$arr] would work as well for example. In places where you have variables, you don't have another choice – Gavriel Feb 01 '16 at 06:51

score 1 · Answer 2 · edited May 23 '17 at 12:31

1

try converting JSON to array .

var o = jsonDoc.Device.Content.UL;
var arr = Object.keys(o).map(function(k) { return o[k] });

edited May 23 '17 at 12:31

Community

answered Feb 01 '16 at 06:32

Vegeta

Michael · Answer 3 · 2016-02-01T09:32:55.553

1

You can use for statement to iterate through an object's values:

var index = [];
for(var name in jsonDoc.Device.Content.UL) 
{ 
    index.push(jsonDoc.Device.Content.UL[name])); 
}

edited Feb 01 '16 at 09:32

answered Feb 01 '16 at 06:36

Michael

3 Answers3