oscaroceguera

const express = require('express')
const path = require('path')
const app = express()

const port = process.env.PORT || 8000
app.use(express.static(path.join(__dirname, '/public')))

app.get('*', function (req, res) {
  res.sendFile(path.resolve(__dirname, 'public', 'index.html'))
})

oscaroceguera

const axios = require('axios')

const getGeoAddress = encodedAddress =>
  axios.get(`https://maps.googleapis.com/maps/api/geocode/json?address=${encodedAddress}`)
    .then(response => {
      return {
        lat: response.data.results[0].geometry.location.lat,
        lng: response.data.results[0].geometry.location.lng,
        formatted_address: response.data.results[0].formatted_address
      }

oscaroceguera

const axios = require('axios')

const encodedAddress = encodeURIComponent('Av. Insurgentes Sur 601, Ciudad de México')
// console.log(encodedAddress) => Av.%20Insurgentes%20Sur%20601%2C%20Ciudad%20de%20M%C3%A9xico
const geocodeURL = `https://maps.googleapis.com/maps/api/geocode/json?address=${encodedAddress}`

axios.get(geocodeURL)
  .then(response => {
    if (response.data.status === 'ZERO_RESULTS') {
      throw new Error('Unable to find that address')

oscaroceguera

const request = require('request')

const geocodeAddress = (address, callback) => {
  // console.log(encodedAddress) => Av.%20Insurgentes%20Sur%20601%2C%20Ciudad%20de%20M%C3%A9xico
  const encodedAddress = encodeURIComponent(address)
  request({
    url: `https://maps.googleapis.com/maps/api/geocode/json?address=${encodedAddress}`,
    json: true
  }, (error, response, body) => {
    if (error) {

oscaroceguera

async function name ([param[, param[, ... param]]]) {
  // statements
}

async function fetchCountriesWithStates() {
   const countries = await fetchCountries()
   const _states = await fetchStates()
   
   return countries.map(country => ({
     ...country,

oscaroceguera

function greet() {
    name = 'Hammad';
    return function () {
        console.log('Hi ' + name);
    }
}

greet()(); // logs 'Hi Hammad'

oscaroceguera

  function greet() {
      name = 'Hammad';
      return function () {
          console.log('Hi ' + name);
      }
  }

  greet(); // nothing happens, no errors

  // the returned function from greet() gets saved in greetLetter

oscaroceguera

function grandFather () {
  var name = 'Oscar'
  // like no es accesible aqui
  fucntion parent () {
    // name es accesible desde aqui
    // like no es accesible desde aqui
    function child () {
      // nivel mas profundo del scope
      // name tambien es accesible desde aqui
      var likes = 'React'

oscaroceguera

executionContextObject = {
  'scopeChain': {}, // contiene su propio objeto variable y otros objetos variables de los contextos
  'variableObject': {}, // contiene argumento de funciones, variables internas y declaraciones de funciones
  'this': valueOfThis
}

oscaroceguera

'scopeChain': {
  // contiene su propio objeto variable y otros objetos de los contextos de ejecución padre
}