Question

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I have a nested data structure / JSON, how can access a specific value?

I want to iterate through a json object which is two dimensional …
for a one dimensional json object I do this

for (key in data) {
alert(data[key]);
}

what do i do about a two dimensional one??

Answer 1

There is no two dimensional data in Javascript, so what you have is nested objects, or a jagged array (array of arrays), or a combination (object with array properties, or array of objects). Just loop through the sub-items:

for (var key in data) {
  var item = data[key];
  for (var key2 in item) {
    alert(item[key2]);
  }
}