Destructuring
The ability to destructure properties of an object or array helps us write more expressive code with less errors.
const obj = {
firstName: "Jean",
surnameName: "Snyman",
age: 32,
role: "Solutions Architect"
};
const { firstName } = obj;
console.log(firstName); // jean
Destructure an array.
const arr = [10, 20, 30, 40, 50];
[a, b] = arr;
console.log(a);