rwaldron

let defaults  = { file: null };

function foo(options) {
    // Merging defaults and options objects in ES6
    options = [ defaults, options ].reduce(Object.assign, {});
}


foo({ file: "happy.md" });

rwaldron

<pre>
# Just Markdown, Yo.

So, I wanted to try to write the simplest webpage possible, [Max Ogden][1]
style. If you have JavaScript, you get something pretty. If not, then you see
[Markdown][2] text, which is fine too.

[1]: http://maxogden.com
[2]: http://daringfireball.net/projects/markdown/
</pre>

rwaldron

// Wire up LCD as described here:
// http://learn.adafruit.com/character-lcds/overview

var five = require("johnny-five"),
    board, lcd;

board = new five.Board();

board.on("ready", function() {

rwaldron

(function() {

    var hasOwnProperty = Object.prototype.hasOwnProperty;

    var Function = hasOwnProperty.constructor;

    function isIdentifier(s) {
        return /[a-zA-Z_$][a-zA-Z_$0-9]*/.test(s);
    }

rwaldron

var five = require("johnny-five"),
    board;

board = new five.Board();

board.on("ready", function() {
  (new five.Led(13)).on();

  var dataPin =   2;
  var clockPin =  3;

rwaldron

Airplane - "Apertem os cintos, o piloto sumiu" - Fasten your seatbelts, the pilot disappeared
Giant (George Stevens) - "Assim Caminha a Humanidade" - "This way walk humanity"
Mystic River - "Sobre meninos e lobos" - "About boys and wolves"
The Hangover - Se beber, não case - If you drink, don't drive
The Godfather - O Poderoso Chefão - The Great Boss
The Good Son - O Anjo Malvado - The Evil Angel
The Sound of Music - A Noviça Rebelde - The Rebel Nun
The Transporter - Carga Explosiva - Explosive Cargo
The Tuxedo - O Terno de 2 Bilhões de Dólares - The 2 billion dollars suit
Be Cool - O Outro Nome do Jogo - The other name of the game

rwaldron

// A Dict class that works in ES6 using Map. Basically it's identical to Map, but
// only expected to be used on string keys.

function Dict() {
    this.elts = new Map();
}

// (string) -> any
Dict.prototype.get = function get(key) {
    return this.elts.get(key);

rwaldron

Object.defineProperty(Object.prototype, 'forIn', {
  value: function(iterator, thisValue) {
    Object.keys(this).forEach(function(key) {
      iterator.call(thisValue, this[key], key, this);
    }.bind(this));
  }
});

var obj = {a: 1, b: 2};

rwaldron

var originalNodeListProto = NodeList.prototype;
var temporaryNodeListProto = Object.create(NodeList.prototype);
temporaryNodeListProto.a = 1;

NodeList.prototype = temporaryNodeListProto;

var l = document.querySelectorAll('a');
console.log(l.a); // inherited from which prototype?

NodeList.prototype = originalNodeListProto;

rwaldron

//----- Example code:

    // Class declarations:
    // - No data properties allowed
    // - Future: support mixins
    // - Optional: call the initialization method `new` instead of `constructor`

    // Superclass
    class Person {
        constructor(name) {