JavaScript How to change one element in array by index in a functional style? change element array javascript,change element array python,change element

Object.assign might be useful:

Object.assign([], initial, { [indexIWantToChange]: 'Something new' })

Snippet:

const initial = [1, 2, 3, 4];
const indexIWantToChange = 2;

let prop = Object.assign([], initial, { [indexIWantToChange]: 'Something new' });

console.log(prop);
Answer:1

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