ES2015 Fat Arrow Function

fatArrows.js

let arr = [4, 9, 14];

// the old way
let newArr = arr.map(function (value) {
  return value + 1;
});

// the new way - ES2015 (3 examples of the same function, each better than the one before it)
let newArr = arr.map( (value) => { return value +1; });
arr.map( value => { return value + 1; });
arr.map( value => value + 1 ) 

console.log(newArr);



console.log(newArr);