ES6 Grundlagen

const obj = { foo: 1 }; 

obj.bar = 2;

let x, { x: y = 1 } = { x }; y;

(function() {

 let f = this ? class g { } : class h { };

 return [ typeof f, typeof h ];

 })();

[...[...'...']].length

(function() { 

if (false) {

 let f = { g() => 1 };

 }

 return typeof f;

 })()

const PI = 3.14; 

console.log(PI) // Gibt 3.14 aus

let titleElements = document.querySelectorAll('.article .title'); let titles = Array.from(titleElements).map( t => t.textContent ); console.log(titles);

let a = 12, b = 3;

[a, b] = [b, a];

class Slave { // ... };

 const slave = Slave();