function printBasicInfo({firstName, secondName, profession}) {

    console.log(firstName + ' ' + secondName + ' - ' + profession)

}

​

var person = {

  firstName: 'John',

  secondName: 'Smith',

  age: 33,

  children: 3,

  profession: 'teacher'

}

​

printBasicInfo(person)

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;

const demo = { nextUrl: 'nextUrl', posts: 'posts' };

​

const target = {}; // replace target with this

​

({ nextUrl: target.nextUrl, posts: target.communityPosts } = demo);

​

console.log(target);

const person = {

    name: 'John',

    age: 34,

    hobbies: {

        read: true,

        playGames: true

    }

}

let {name, hobbies: {read, playGames}} = person;

​

console.log(person);

console.log(name);

console.log(read,playGames);

​

({ a, b } = { a: 10, b: 20 });

console.log(a); // 10

console.log(b); // 20

​

​

// Stage 4(finished) proposal

({a, b, ...rest} = {a: 10, b: 20, c: 30, d: 40});

console.log(a); // 10

console.log(b); // 20

console.log(rest); // {c: 30, d: 40}

​

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 obj = { a: 1, b: 2 };

const { a, b } = obj;

// This creates two variables, a and b,

// which are equivalent to

// const a = obj.a;

// const b = obj.b;

​

const array = [1, 2, 3, 4, 5];

const [ zerothEle, firstEle ] = array;

// This creates zerothEle and firstEle, both of which point

// to the elements in the 0th and 1st indices of the array

let person = {

    name: 'John',

    age: 21,

    gender: 'male'

}

​

let { name, age, gender } = person;

​

console.log(name, age, gender);

const user = { id: 42, isVerified: true }

​

// grabs the property by name in the object, ignores the order

const { isVerified, id } = user;

​

console.log(isVerified);

// > true

const x = [1, 2, 3, 4, 5];

const [y, z] = x;

console.log(y); // 1

console.log(z); // 2

var a = obj.a

var b = obj.b

var c = obj.c