let numbers = [1,2,3,4,5,6,7,8,9];
let newNumbers = numbers.map(function(item){
  return item+5;
});
console.log(newNumbers);
/// OUTPUT: [6, 7, 8, 9, 10, 11, 12, 13, 14]

/**
*  আরো সহজ ভাবে es6 এ অ্যারো ফাংশন ব্যবহার করে
*  লিখাযায়
**/

let numbers = [1,2,3,4,5,6,7,8,9];
let newNumbers = numbers.map(item=> item+5);
console.log(newNumbers);
/// OUTPUT: [6, 7, 8, 9, 10, 11, 12, 13, 14]