Block-Scoped Functions

[heejunghwang]

ES6에서의 예제가 이해가 되지 않음

• ES6

{
    function foo () { return 1 }
    foo() === 1
    {
        function foo () { return 2 }
        foo() === 2
    }
    foo() === 1
}

• ES5
  [source, javascript]

//  only in ES5 with the help of block-scope emulating
//  function scopes and function expressions
(function () {
    var foo = function () { return 1; }
    foo() === 1;
    (function () {
        var foo = function () { return 2; }
        foo() === 2;
    })();
    foo() === 1;
})();

[참고사이트]
http://es6-features.org/#BlockScopedFunctions