JsonArray::createNestedObject() appends a new object to the array pointed by the JsonArray.

If the JsonArray is null/unbound, this function does nothing.


JsonObject createNestedObject() const;

Return value

JsonArray::createNestedObject() returns a JsonObject that points to the newly created object.

JsonArray::createNestedObject() returns null if the memory allocation fails; in which case JsonObject::isNull(), returns true.


StaticJsonDocument<200> doc;
JsonArray array =<JsonArray>();
JsonObject nested = array.createNestedObject();
nested["hello"] = "world";
serializeJson(array, Serial);

will write


See also