초보적 인식 대상 2

1. , 
    function dog(){
/*1.1 */
        var obj = new Object();
/*1.2 */
        obj.name = ' ';
        obj.age = 0;
        obj.dogFrends = [' ',' '];
        obj.eat = function(){
            console.log(' ');
        }
        obj.run = function(){
            console.log(' ');
        }
/* */
        return obj;
    }
    var smallDog = dog();
    console.log(smallDog.name);
    var bigDog = dog();
    console.log(bigDog.age);

1. , 
    function dog(name,age,dogFriends){
/*1.1 */
        var obj = new Object();
/*1.2 */
        obj.name = name;
        obj.age = age;
        obj.dogFrends = dogFriends;
        obj.eat = function(){
            console.log(' ');
        }
        obj.run = function(){
            console.log(' ');
        }
/* */
        return obj;
    }
    var smallDog = dog(' ',0,[' ',' ']);
    console.log(smallDog.age);
    var bigDog = dog(' ',2,[' ',' ']);
    console.log(bigDog.age);

1. , 
    function dog(name,age,dogFriends){
/*1.1 */
        var obj = new Object();
/*1.2 */
        this.name = name;
        this.age = age;
        this.dogFrends = dogFriends;
        this.eat = function(){
            console.log(' ');
        }
        this.run = function(){
            console.log(' ');
        }
/* */
        return obj;
    }
    var smallDog = dog(' ',0,[' ',' ']);
    console.log(smallDog.age);
    var bigDog = dog(' ',2,[' ',' ']);
    console.log(bigDog.age);

1. , 
    function Dog(name,age,dogFriends){
/*1.2 */
        this.name = name;
        this.age = age;
        this.dogFrends = dogFriends;
        this.eat = function(someThing){
            console.log( this.name+' '+someThing);
        }
        this.run = function(someWhere){
            console.log(this.name +' '+someWhere);
        }
    }
    var smallDog = new Dog(' ',0,[' ',' ']);
    console.log(smallDog.age);
    var bigDog = new Dog(' ',2,[' ',' ']);
    console.log(bigDog.age);
    smallDog.eat(' ');
    bigDog.eat(' ');

     ， ， ， 。
1. , 
    function Dog(option){
/*1.0 */
        var option = option ||{};
/*1.1 */
        this.name = option.name;
        this.age = option.age;
        this.dogFrends = option.dogFrends;
        this.eat = function(someThing){
            console.log( this.name+' '+someThing);
        }
        this.run = function(someWhere){
            console.log(this.name +' '+someWhere);
        }
    }
    var smallDog = new Dog({name:' ',age:0,dogFriends:[' ',' ']});
    console.log(smallDog.age);
    var bigDog = new Dog({name:' ',age:2,dogFriends:[' ',' ']});
    console.log(bigDog.age);
    smallDog.eat(' ');
    bigDog.eat(' ');
    alert(smallDog.eat == bigDog.eat);  //false

1. , 
    function Dog(option){
/*1.0 */
        var option = option ||{};
/*1.1 */
        this.name = option.name;
        this.age = option.age;
        this.dogFrends = option.dogFrends;
 }
    Dog.prototype = {
        eat:function(someThing){
            console.log( this.name+' '+someThing);
        },
        run:function(someWhere){
            console.log(this.name +' '+someWhere);
        }
    }
    var smallDog = new Dog({name:' ',age:0,dogFriends:[' ',' ']});
    console.log(smallDog.age);
    var bigDog = new Dog({name:' ',age:2,dogFriends:[' ',' ']});
    console.log(bigDog.age);
    smallDog.eat(' ');
    bigDog.eat(' ');

 /*1. , 
    function Dog(option){
/* ， */
        this._init(option);
    }
// 
    Dog.prototype = {
/* */
        _init:function(option){
/*1.1 */
            var option = option ||{};
            this.name = option.name;
            this.age = option.age;
            this.dogFrends = option.dogFrends;
        },// 
        eat:function(someThing){
            console.log( this.name+' '+someThing);
        },
        run:function(someWhere){
            console.log(this.name +' '+someWhere);
        }
    }
    var smallDog = new Dog({name:' ',age:0,dogFriends:[' ',' ']});
    console.log(smallDog.age);
    var bigDog = new Dog({name:' ',age:2,dogFriends:[' ',' ']});
    console.log(bigDog.age);
    smallDog.eat(' ');
    bigDog.eat(' ');

    function dog(){
        alert(this);
    }
    dog();
//    new ， dog ， this .
   new dog();