time of the last change of a data point.

[franzda]

is there a way in javascript (for node-red) to query the time of the last change of a data point.
The system "knows" this because the time is displayed in the object list.

[paul53]

@franzda

let lc = getState(id).lc;
// Trigger:
on(id, function(dp) {
   let lc = dp.state.lc;
});

[franzda]

@paul53 Hi Paul thank you for very quick response. The question ist how can I access to the ts property. I mien ts is the value I am looking for.

[paul53]

@franzda sagte: how can I access to the ts property.

.ts instead of .lc.

[OliverIO]

@franzda

1. you insert a node "iobroker in"
2. select your datapoint as topic
3. select object in payload
4. then you select a function node with the following code

msg.payload=msg.payload.lc; //or msg.payload.ts
return msg;

5 for testing purpose you can connect the function node with a debug node

[franzda]

@oliverio Hi Oliver Thank you for quick response. it works

[franzda]

@franzda said in time of the last change of a data point.:

@oliverio Hi Oliver Thank you for quick response. it works

this is my code thank you for helping: (two different formats for testing)

   // ---  
  sensor.neulcT = (new Date(msg.payload[i].lc)).toLocaleTimeString();
  sensor.neulc =  (new Date(msg.payload[i].lc)).toLocaleString();
  // ---

[franzda]

@oliverio
Hi Oliver Thank you for quick response. it works

this is my code thank you for helping: (two different formats for testing)

   // ---  
  sensor.neulcT = (new Date(msg.payload[i].lc)).toLocaleTimeString();
  sensor.neulc =  (new Date(msg.payload[i].lc)).toLocaleString();
  // ---

[franzda]

@paul53 hi Paul Thank you for quick response. it works

this is my code thank you for helping: (two different formats for testing)

   // ---  
  sensor.neulcT = (new Date(msg.payload[i].lc)).toLocaleTimeString();
  sensor.neulc =  (new Date(msg.payload[i].lc)).toLocaleString();
  // ---