如何在JS中遍历JSON

Question

I'm developing an Ajax query to Django and works fine, returns the correct value but when I want to access the info I get this error:

SyntaxError: missing name after . operator

I returned the information query with these lines in python file:

attributes = MyModel._meta.get_fields()
objects = MyModel.objects.all()
data = serializers.serialize('json', objects, fields=(attributes[1].name))
print(data)

return HttpResponse(data, content_type='application/json')

print(data) output:

[{
  "model": "contenttypes.contenttype",
  "pk": 11,
  "fields": {
    "model": "accountingseat"}
  },
{
  "model": "contenttypes.contenttype",
  "pk": 12,
  "fields": {
    "model": "bill"
  }
}]

javascript file:

function functionName(param) {
  for (var i = 0; i < param.length; i++) {
    console.log(param[i]);
    console.log(param[i].pk);
    var fields = param[i]['fields'];
    for (var x = 0; x < fields.length; x++) {
      console.log(fields.[x]); //error line
    }
  }
}

console.log() output:

Object { model: "general.module", pk: 1, fields: { name: "General" } }

The problem is that I can't access with name because name of attribute change in each model.

How can i access to fields? Thanks in advance.

Answer 1

If I understand your question correctly, then this can be resolved by using Object.values() like so:

function functionName(param) {
  for (var i = 0; i < param.length; i++) {
    console.log(param[i]);
    console.log(param[i].pk);

    var fields = param[i]['fields'];

    // Object.values throws expection if undefined passed so check this first
    if(fields) {

        // Access the values of the fields object if valid
        var fieldsValues = Object.values(fields);

        for (var x = 0; x < fieldsValues.length; x++) {
          console.log(fieldsValues[x]);
        }
    }
  }
}