ES6 - Les bases

const obj = { foo: 1 }; 

obj.bar = 2;

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

function mystery(...params) {

  return params; 

}

let a = mystery(1,23,4);

let name = 'Harry';

let occupation = 'wizard';

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

(function() {

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

 return [ typeof f, typeof h ];

 })();

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

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

let some_text = "some string"; 

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

 return true;

 }

let a = 12, b = 3;

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

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

console.log(a, b);