자바 스크립트 - 변수

function outter(){
	var title = 'test';

	  function inner(){
        console.log(title);
    }
    inner();
}
outter();

function outter(){
    var title = 'test';
    return function(){
        alert(title);
    }
}
inner = outter();
inner();

var arr = [];
for(var i=0; i<5; i++){
	arr[i] = function(){
			console.log(i);
		}

}
for(var index in arr){
	console.log(arr[index]());
}

var arr = []
for(var i=0; i<5; i++){
		arr[i] = function(id){
			return function(){
				return id;
			}
		}(i);

}
for(var index in arr){
	console.log(arr[index]());
}