Extract Data from Many Array With Object of Same name

General
1

Hy! I am new to Node-red and java script, I need some help. I am using a WIFI node to know the WIFI strength of all the available networks. Some times I get one to two objects (networks), some times I get 10-15 (objects) based on network available. I only wants to read the signal_level value of SSID of "TCF" (as i am connected to TCF wifi). How can I achieve this task? Is is possible to filter only TCF and ignore rest of SSID. Plus sometimes i have multiple objects with same TCF SSID name

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2

In a change node you can set msg.payload, to jsonata(J:) $$.payload[ssid = "TCF"] . That should return all array objects where ssid equal "TCF".

Or
$$.payload[ssid = "TCF"].signal_level would return the signal level e.g -58

You can do similar with filter() or find() in javascript.

7

Sorry i made i mistake in the debug node. Now everything is working fine as you have mentioned in earlier. Thanks for your help.

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8

Wifi Final flow.json (5.5 KB)

here is the flow, in case if anyone wants you use it in future