ネットアンサー55備忘録

Heper text Candy Console dot log

 
const array1 = [1, 4, 9, 16];
//pass a function to map 
const map1 = array1.map(function (value, index) { 
  return value * 2; 
} 

console.log(map1);
//expected output: Array [2, 8, 18, 32]