How to find key by name in json-query?

Question

I have JSON object:

{
  "type": "...",
  "start": 0,
  "end": 93,
  "items": [
    {
      "type": "...",
      "start": 0,
      "end": 93,
      "more": {
        "type": "...",
        "start": 0,
        "__FOO__": true,
        "end": 93,

I want to get __FOO__ property from that object using json-query.

The problem is __FOO__ can be anywhere in the object. I mean deep inside or at the root. also the object structure can be change (array may be object or even not exist).

So I tried to get this property using this syntax but it doesn't work. What is the syntax that can find me __FOO__?

const data = require("./data.json");

const jsonQuery = require("json-query");

const x = jsonQuery("[__FOO__]", { data });

console.log(x);

codesandbox.io

Does this answer your question? [How to find a particular json value by key?](https://stackoverflow.com/questions/14048948/how-to-find-a-particular-json-value-by-key) — rojadesign, Nov 25 '20 at 07:31
no. I the answer is in Pyton. I using json-query with JavaScript — Jon Sud, Nov 25 '20 at 07:32
@ra.design You link to a python answer and an answer that doesn't use json-query. — Mark Baijens, Nov 25 '20 at 07:33
Sorry about that! I think you need to loop through all keys of the given JSON with `for (var key in json)`. — rojadesign, Nov 25 '20 at 07:49
and what are you looking for? `body`? `expression`? `xxx`? `property`? `arguments`? — tevemadar, Nov 25 '20 at 09:30

score 1 · Answer 1 · answered Nov 25 '20 at 07:53

1

I think "items[**][__FOO__!=null]" seems to work. It returns the object containing __FOO__, not the value of __FOO__ itself.

answered Nov 25 '20 at 07:53

suddjian

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Well I'm not sure what to tell ya, I tested it on the code you posted and it works for me. – suddjian Nov 25 '20 at 17:58

How to find key by name in json-query?

1 Answers1