Hello again, i get an array of objects from node-red-contib-arp (note: filtering for mac adresses is not possible/working in that node!): [image] now i try to get the array index of the searched mac adress (in this case 21) and output the index and the ip address. In the future i dont know the i…

To find index there is .findIndex() method [image] Array.prototype.findIndex() - JavaScript | MDN The findIndex() method returns the index of the first element in the array that satisfies the provided testing function. Otherwise, it returns -1, indicating that no element p…

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Get index of array

General

hotNipi 7 June 2021 13:12 3

To find index there is .findIndex() method

var idx = msg.payload.findIndex(e => e.mac == '1c:87:76:b0:2a:68');
msg.payload = idx;
return msg;

If not found, -1 returned
If there is more than one, index of first occurrence returned.

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Get index of array

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