itzsaga

// fetch places
function fetchPlaces () {
  return (dispatch) => {
    dispatch({type: 'FETCH_PLACES'})
    return fetch('http://localhost:3001/api/places')
      .then(response => {
        dispatch({type: 'RECEIVED_PLACES', payload: response})
      })
      .catch((err) => {
        dispatch({type: 'FETCH_PLACES_ERROR', payload: err})

itzsaga

$('.js-next').on('click', function() {
  let nextIndex
  let dataIdIndex = itemsValues.indexOf(parseInt($('.js-next').attr('data-id')))
  if (dataIdIndex === itemsValues.length - 1)
    nextIndex = 0
  else
    nextIndex = dataIdIndex + 1
  $.getJSON('/items/' + itemsValues[nextIndex], function(data) {
    $('#name').html(`${data['name']} -

itzsaga

$('.js-next').on('click', function() {
  let nextIndex = itemsValues.indexOf(parseInt($('.js-next').attr('data-id'))) + 1
  $.getJSON('/items/' + itemsValues[nextIndex], function(data) {
    $('#name').html(data['name'])
    $('#rating').html(data['rating'])
    $('#notes').html(data['notes'])
    if (nextIndex === itemsValues.length)
      $('.js-next').attr('data-id', itemsValues[0])
    else
      $('.js-next').attr('data-id', data['id'])

itzsaga

let itemsValues

$(() => {
  $.getJSON('/items.json', function (data) {
    itemsValues = $.map(data, function (e) {
      return e.id
    })
  })
})

itzsaga

// With ES6 Template Literals
data.items.forEach(function (item) {
  itemList = itemList.add(`<li><strong><a href='/items/${item['id']}'>${item['name']}</a></strong>
    <ul>
      <li>Rating: ${item['rating']}</li>
      <li>Notes: ${item['notes']}</li>
    </ul>`
  )
})

itzsaga

# app/controllers/customers_controller.rb

class CustomersController < ApplicationController

  def index
    @customers = Customer.all
  end

  def upload
    LeadsWorker.perform_async(params[:leads].path)

itzsaga

# app/workers/leads_worker.rb

class LeadsWorker
  require 'csv'
  include Sidekiq::Worker

  def perform(leads_file)
    CSV.foreach(leads_file, headers: true) do |lead|
      Customer.create(email: lead[0], first_name: lead[1], last_name: lead[2])
    end

itzsaga

Point.prototype.toString = function () {
  return `(${this.x}, ${this.y})`
}

itzsaga

function Point (x, y) {
  this.x = x
  this.y = y
}
Point.prototype.toString = () => {
  return `(${this.x}, ${this.y})`
}

// In the terminal
> var p = new Point(2,3)

itzsaga

let obj = {a:1, b:2, c:3}
let {a, b, c} = obj