#includeconst char* json = "{\"isTrue\":true}"; StaticJsonDocument<512> doc; deserializeJson(doc, json); bool value = doc["isTrue"].as (); // Retrieve boolean value if (value) { Serial.println("The value is true"); } else { Serial.println("The value is false"); }
#includeIn this example, the program attempts to retrieve a boolean value associated with the non-existent key "nonExistent". The containsKey method is used to check if the key exists before attempting to retrieve the value. If the key does not exist, the program prints a message indicating that the key was not found. Package Library: ArduinoJsonconst char* json = "{\"isTrue\":true}"; StaticJsonDocument<512> doc; deserializeJson(doc, json); // Try to retrieve non-existent key if (doc.containsKey("nonExistent")) { bool value = doc["nonExistent"].as (); } else { Serial.println("Key not found"); }