capint
5/14/2017 - 12:39 PM

MERN >> ES2015 >> map

MERN >> ES2015 >> map

map
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const continents = ['Africa', 'America', 'Asia', 'Australia', 'Europe'];
//ES2015
const message = continents.map(c => `Hello ${c}!`).join(' ');

//<=> ES5
var message = continents.map(function (c) {
  return 'Hello ' + c + '!';
}).join(' ');