const book = {
title: 'Ego is the Enemy',
author: 'Ryan Holiday',
publisher: {
name: 'Penguin',
type: 'private'
}
};
const {title: bookName = 'Ego', author, name: {publisher: { name }} = book, type: {publisher: { type }} = book } = book;Object Destructuring =>
//
The destructuring assignment syntax is a JavaScript expression that makes it
possible to unpack values from arrays,
or properties from objects, into distinct variables.
//
example:
const user = {
id: 42,
is_verified: true
};
const {id, is_verified} = user;
console.log(id); // 42
console.log(is_verified); // true
const hero = {
name: 'Batman',
realName: 'Bruce Wayne',
address: {
city: 'Gotham'
}
};
// Object destructuring:
const { realName, address: { city } } = hero;
city; // => 'Gotham'let {a, b, c} = objvar a = obj.a
var b = obj.b
var c = obj.cconst hero = {
name: 'Batman'
};
// Object destructuring:
const { name: heroName } = hero;
heroName; // => 'Batman'