Check if key is in the object

Question

var stored_names = {
      332438809: "Bereznyak24",
      489485245: "Bereznyak25"
    }
  if ((data.message.from.id in stored_names) && (data.message.text === "/start")) {
    SendMsg(id, first_reply.text);
  }

How can I check if my object has key (or has not) that's equal to data.message.from.id value that I get later?

Possible duplicate of [How do I check if an object has a property in JavaScript?](https://stackoverflow.com/questions/135448/how-do-i-check-if-an-object-has-a-property-in-javascript) — zero298, Feb 06 '19 at 21:50

jo_va · Answer 1 · 2019-02-06T22:02:31.797

1

Your answer should work, as your are using the in keyword (value in stored_names).

Another way to check if the value is amongst the keys is to use Object.key() to enumerate the keys and Array.includes.

Object.keys(arr).includes(value);

See the doc for Object.keys

edited Feb 06 '19 at 22:02

answered Feb 06 '19 at 21:51

jo_va

13,504
3
23
47

thanks for the reply! Why can't I get this thing working? `if (( Object.keys(stored_names).includes(data.message.from.id) )` – Bereznyak Feb 06 '19 at 22:31
You should be good with the code you posted in your question. Verify what data.message.from.id gives you though as well as data.message.text – jo_va Feb 06 '19 at 22:38

Check if key is in the object

1 Answers1