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How to use 'json find' in JavaScript

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mysql/mysql-shell
277function json_find_key(json, key) {
278  if (key in json) {
279    return json[key];
280  }
281
282  for (var k in json) {
283    if (type(json[k]) == 'Object' || type(json[k]) == 'm.Map') {
284      var o = json_find_key(json[k], key);
285      if (o != undefined)
286        return o;
287    } else if (type(json[k]) == 'Array' || type(json[k]) == 'm.Array') {
288      for (var i in json[k]) {
289        if (type(json[k][i]) != "String") {
290          var o = json_find_key(json[k][i], key);
291          if (o != undefined)
292            return o;
293        }
294      }
295    }
296  }
297
298  return undefined;
299}
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