Is set.has(value) possible under given conditions?

Question

API

I'm learning JS. Couldn't find an answer:
let xyz = new Set();
xyz.add({ name: "John" });
console.log(xyz.has({ name: "John" })); // false
Question:
Based on the condition above, is there a way to find out xyz.has for { name: "John" } in xyz ?
I'm not interested in any solution to this problem, but in finding out why it is possible / not possible to do xyz.has({ name: "John" }) in the above example.
PS:
I know the solution. Because arrays, like objects, are equal to each other only if they are literally the same piece of computer memory, then:
let xyz = new Set();
let john = { name: "John" };
xyz.add(john);
console.log(xyz.has(john)); // true
But I don't know the answer to the question.

Answer 1

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Answer 2

There is a solution for given conditions:
xyz.forEach ((value) => {
if (value["name"] == "John") console.log("found");
});