ES6 Grundlagen

const speed = 'quick'; `The ${speed} brown fox jumps over the lazy dog.`

let name = 'Harry';

let occupation = 'wizard';

console.log(`Hi! My name is ${name}. I'm a ${occupation}.`);

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

typeof (new (class F extends (String, Array) { })).substring

(function() { 

if (false) {

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

 }

 return typeof f;

 })()

typeof (function* f() { yield f })().next().next()

let some_text = "some string"; 

if(some_text.indexOf('str') !=-1){

 return true;

 }

let a = 12, b = 3;

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

let point = [1,3], segment = [point,[5,5]], triangle = [...segment,[1,8]]; 

class Slave { // ... };

 const slave = Slave();

const [a, , b] = [1, 2, 3]; 

console.log(a, b);