ES6

wut?

Arrows

var compute = a => a * 3;

http://www.es6fiddle.net/i76oa5cn/

Classes

class Shape {
  render() {
    console.log("Shape");
  }
}

class Triangle extends Shape {
  render() {
    super.render();
    console.log("Triangle");
  }
}

http://www.es6fiddle.net/i76oqpud/​

Literal Objects

var shape = {
  render() {
    console.log("Shape"); 
  }
};

http://www.es6fiddle.net/i76p0nl1/​

Destructuring

var shape = {
  width: 5,
  height: 8,
};

var { width, height } = shape;

http://www.es6fiddle.net/i76pau65/​

Variadic Arguments

function log(message, ...data) {
  console.log(message);
  console.log(data);
}

log("ERROR", 3, "crash");

http://www.es6fiddle.net/i76pjgyw/​

Let

let x = "Bob";
let x = "Alice"; // << 
// ERROR: Duplicate declaration

http://www.es6fiddle.net/i76pp4m5/​

Const

const x = "Bob";
x = "Alice"; // << 
// ERROR: x is read-only

http://www.es6fiddle.net/i76prhs0/​

Sets, Maps, etc.

var s = new Set();
s.add("Bob");

console.log(s.has("Bob"));

http://www.es6fiddle.net/i76q87lb/​

PHP

var what = "World";
var result = `Hello ${ what }`;

http://www.es6fiddle.net/i76p76jo/​

(Template Strings)

Also:

Iterators

Proxies

Unicode

Promises

Modules

Math, Array functions

Questions/Discussion?