using for loop to iterate through array

forLoop.js

var i;
var names = ['jon', 'jane', 'jack'];

// imperative programming
for (i = 0; i < names.length; i++) {
  names[i] = names[i][0].toUpperCase() + names[i].slice(1);
}

console.log(names) // ['Jon', 'Jane', 'Jack']
console.log(i) // 3