Quiz Questions

Can you give an example for destructuring an object or an array?

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JAVASCRIPT

Destructuring is an expression available in ES2015 which enables a succinct and convenient way to extract values of Objects or Arrays and place them into distinct variables.

Array destructuring

// Variable assignment.
const foo = ['one', 'two', 'three'];


const [one, two, three] = foo;
console.log(one); // "one"
console.log(two); // "two"
console.log(three); // "three"
// Swapping variables
let a = 1;
let b = 3;


[a, b] = [b, a];
console.log(a); // 3
console.log(b); // 1

Object destructuring

// Variable assignment.
const o = { p: 42, q: true };
const { p, q } = o;


console.log(p); // 42
console.log(q); // true

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