Loop through array of object

General
1

Hi,

I have this flow

image
image957Ă—186 9.09 KB

and its corresponding output is

image
image379Ă—742 16.8 KB

I need to access the highlighted values. Can anybody help with the function.

Thanks,
Neeta

2

Hi Neeta,

If you hover your mouse over one of the highlighted entries, you will see some options appear one of which lets you copy the path to the object.

With that in hand, you can, if you need to walk through the array, replace any array references with a looping function.

msg.payload.sensordatavalues.forEach( (val) => {
    // val.value and val.value_type are what you need
})
3

You can also loop through the array using a split node.
e.g.

[{"id":"354197ee.e1a278","type":"inject","z":"bf9e1e33.030598","name":"","props":[{"p":"payload.sensor_data_values","v":"[{\"value\":\"2:20\",\"data_type\":\"f1\",\"id\":1234},{\"value\":\"3:20\",\"data_type\":\"f2\",\"id\":1235}]","vt":"json"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","x":100,"y":80,"wires":[["fa34fe67.be89c","208ed9c4.f23cce"]]},{"id":"fa34fe67.be89c","type":"debug","z":"bf9e1e33.030598","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","x":430,"y":80,"wires":[]},{"id":"208ed9c4.f23cce","type":"change","z":"bf9e1e33.030598","name":"","rules":[{"t":"move","p":"payload.sensor_data_values","pt":"msg","to":"payload","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":350,"y":120,"wires":[["f49a9fd5.5aa04"]]},{"id":"f49a9fd5.5aa04","type":"split","z":"bf9e1e33.030598","name":"","splt":"\\n","spltType":"str","arraySplt":1,"arraySpltType":"len","stream":false,"addname":"","x":630,"y":120,"wires":[["c800f9d1.d02bf8"]]},{"id":"c800f9d1.d02bf8","type":"debug","z":"bf9e1e33.030598","name":"do something to each array element","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":880,"y":120,"wires":[]}]
4

Thanks you so much. worked for me