ivankisyov/promises.md

## promises.md

      
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              promises.md
            
          
    Promises

Promise.all

node.js
const axios = require("axios");

const getCountriesByRegion = region => {
  return axios
    .get(`https://restcountries.eu/rest/v2/region/${region}`)
    .then(response => response.data.map(country => country.name));
};

const countriesInAsia = getCountriesByRegion("asia");
const countriesInEurope = getCountriesByRegion("europe");

Promise.all([countriesInAsia, countriesInEurope])
  .then(values => console.log(values))
  .catch(e => console.log(e));