JS的對象


<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>JS的對象</title>
    <script>
        // this所在的函數(shù)在哪個對象中,this就代表這個對象
        // 對象
        var dog = {
            name: 'wangCai',
            age: 18,
            height: 166,
            dogFriends: ['laiFu', 'aHuang'],
            run: function (someWhere) {
               console.log(this.name + '在跑----' + someWhere);
            },
            eat: function (someThing) {
               console.log(this.name + '在吃----' + someThing);
            }
        };

        console.log(dog.name, dog.dogFriends);
        dog.run('杭州下沙');
        dog.eat('五花肉');

    </script>
</head>
<body>

</body>
</html>



<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <script>
        function Dog() {
           console.log('我是一個普通函數(shù)');
        }

        // 調(diào)用函數(shù)
//        Dog();

        // 升級 ---> 構(gòu)造函數(shù) alloc init  new
        var dog1 = new Dog();
        var dog2 = new Dog();

        console.log(dog1, dog2);

    </script>
</head>
<body>

</body>
</html>



<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>驗證批量產(chǎn)生對象</title>
    <script>
        // 構(gòu)造函數(shù)
        function Dog() {
            this.name = null;
            this.age = null;
            this.height = null;
            this.dogFriends = [];
            this.eat = function (someThing) {
                console.log(this.name + '吃' + someThing);
            };
            this.run = function (someWhere) {
                console.log(this.name + '跑' + someWhere);
            }
        }

        // 產(chǎn)生對象
        var dog1 = new Dog();
        var dog2 = new Dog();

        dog1.name = 'lili';
        dog1.age = 18;
        dog1.dogFriends = ['232', '007'];


        dog2.name ='wangcai';
        dog2.age = 1;
        dog2.height = 0.22;

        console.log(dog1, dog2);

        dog1.eat('骨頭');

        dog2.eat('奶');


        // 帶參數(shù)
        function OtherDog(name, age, height, dogFriends) {
            this.name = name;
            this.age = age;
            this.height = height;
            this.dogFriends = dogFriends;
            this.eat = function (someThing) {
                console.log(this.name + '吃' + someThing);
            };
            this.run = function (someWhere) {
                console.log(this.name + '跑' + someWhere);
            }
        }

        var dog3 = new OtherDog('w', 19, 1122, ['2121']);

        console.log(dog3);
    </script>
</head>
<body>

</body>
</html>
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