IIFE in loop vs pure functional version

gistfile1.js

// imperative version
var i,
    callLater = {};

for (i = 0; i < 3; i++) {
  (function (val) {
    callLater[val] = function () {
      return "hello " + val;
    };
  }(i));
}

console.log(callLater[0]());  // hello 0
console.log(callLater[2]());  // hello 2

// pure functional version

var sayHello = function (text) {
  return ("hello " + text);
};
var cacheDefaultFor = function (func) {
  return function (arg) {
    return function () {
      return func(arg);
    };
  };
};

var sayHelloWithValue = cacheDefaultFor(sayHello);

console.log(sayHelloWithValue(0)());  // hello 0
console.log(sayHelloWithValue(2)());  // hello 2