JSON

Parsing JSON text into objects; use string() for the reverse.

Available on: Flexs Q5C Flexs Q5 Pro Flexs Q5M

JSON.parse() converts JSON text (from http responses, MQTT messages or files) into script objects. The reverse — serialising an object to JSON text — is done with the global string() function.

Functions

JSON.parse() — Parses a JSON string into an object.
JSON.stringify() — Serialises a value to JSON text — equivalent to the global string() for objects.

JSON.parse()

JSON.parse(text) → object

Parses a JSON string into an object.

Arguments

Name	Type	Required	Default	Description
text	string	yes	—	JSON text, e.g. `res.payload` from http.req or `event.message` from MQTT.

Returns

object The parsed value.

Example

let res = http.req(url, string(request), 1000, false);
if(res.err === 0 && res.code === 200){
  let payload = JSON.parse(res.payload);
  print("Remote Q5 Battery Voltage", payload.batteryVoltage);
}

JSON.stringify()

JSON.stringify(value) → string

Serialises a value to JSON text — equivalent to the global string() for objects.

Available per the mJS standard. In the factory examples the global string() function is normally used for the same purpose.

Arguments

Name	Type	Required	Default	Description
value	any	yes	—	The value to serialise.

Returns

string JSON text.

Example

let payload = JSON.stringify({ v: 14.3 }); // '{"v":14.3}'