How to add element to array in react object?

Question

JavaScript

Conditionally there is such a state

const [filter, setFilter] = useState({type:"", duration: []});

how to add values ​​from different buttons to this array?

Answer 1

const { duration } = filter;

setFilter({
  ...filter,
  [ ...duration, 1, 2, 3 ], // добавили в массив 1, 2 и 3
});

// теперь state станет
// { type:"", duration: [1, 2, 3] }