How to add property to existing object on JavaScript/React

Question

I'm fetching data from API and i would like to add property to my object. I'm currently adding image property but i need to add this one layer deeper inside object.

Could you give me a hint how to achieve that?

I have stuck on this moment:

My code:

const Review = () => {
  const url = "https://jsonplaceholder.typicode.com/users";

  const [people, setPeople] = useState(null);

  const fetchPeople = async () => {
    try {
      const response = await fetch(url);
      const data = await response.json();

      let test = Object.entries(data).map((people) => ({
        ...people,
        image: "image url goes here",
      }));
      setPeople(test);
    } catch (error) {
      console.error(error);
    }
  };

  useEffect(() => {
    fetchPeople();
    console.log(people);
  }, []);

Answer 1

Object.entries returns an array [index, value]. You just need to add image property to value which is an object.

 fetch("https://jsonplaceholder.typicode.com/users").then(r => r.json()).then(data => { const newData = Object.entries(data).map(people => { people[1].image = "some image here" return people; }); console.log(newData); });

Answer 2

Using object.entries was bad idea:D Solution for my question is:

  const fetchPeople = async () => {
    try {
      const response = await fetch(url);
      const data = await response.json();
      const peopleWithImages = data.map((person, index) => {
        return {
          ...person,
          image: `https://robohash.org/?set=set${index + 1}`,
        };
      });

      setPeople(peopleWithImages);
    } catch (error) {
      console.error(error);
    }
  };

  useEffect(() => {
    fetchPeople();
  }, []);