qetr1ck-op

var xhr = new XMLHttpRequest();

xhr.open('GET', '/my/url'); //xhr.open(method, URL, async, user, password)

xhr.send(); //xhr.send([body])

//xhr.abort() to cancel the request

//also more convenience way to use
//onload onerror events

qetr1ck-op

{ "_id" : ObjectId("56921bc7ae2a196644a46bbd"), "hello" : "mongoShell" }

qetr1ck-op

// ES7, async/await
function sleep(ms = 0) {
  return new Promise(r => setTimeout(r, ms));
}

(async () => {
  console.log('a');
  await sleep(1000);
  console.log('b');
})()

qetr1ck-op

(function(self) {
  'use strict';

  if (self.fetch) {
    return
  }

  function normalizeName(name) {
    if (typeof name !== 'string') {
      name = String(name)

qetr1ck-op

// Factories for creating new btns
// app/components/btnDefaultFactory.js
export default const btnDefaultFactory = (customOpts) => {
    const defaultOpts = {
        size: 12,
        color: 'powderblue',
        state: 'brand new'
    };

    return { ...defaultOpts, ...customOpts };

qetr1ck-op

// Let's get hold of those elements
var outer = document.querySelector('#outer');
var inner = document.querySelector('#inner');

// Let's listen for attribute changes on the
// outer element
new MutationObserver(() => {
	console.log('mutate');
}).observe(outer, {
	attributes: true

qetr1ck-op

const file1 = getSync('file1.json');
const file2 = getSync('file2.json');
const file3 = getSync('file3.json');

console.log(file1);
console.log(file2);
console.log(file3);

qetr1ck-op

function baz() {
    throw new Error('Oops!');
}

function bar() {
    return baz();
}

function foo() {
   bar();

qetr1ck-op

function multiple(a, b) {
    return a * b;
}

function square(n) {
    return multiple(n, n);
}

function printSquare(n) {
    console.log(square(n));

qetr1ck-op

const o1 = {
  prop: 'prop'
}

const o2 = Object.setPrototypeOf({
  prop2: 'prop2'
}, o1);

console.log(o2.prop2, o2.prop)