Object Literals, Shorthand & Destructuring

Object literal shorthand:

const name = 'John';
const user = { name, age:30, greet(){ console.log('hi'); } };

Destructuring makes extracting values easy:

const {name, age} = user;
const [first, second] = [10,20];

Nested destructuring:

const {address:{city}} = user;

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Example: Function parameter destructuring

function render({title, content, author='Anonymous'} = {}){
  console.log(title, content, author);
}
render({title:'Demo', content:'Hello'});