JS的对象
2016-10-05 本文已影响16人
Z了个L
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>JS的对象</title>
<script>
// this所在的函数在哪个对象中,this就代表这个对象
// 对象
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('我是一个普通函数');
}
// 调用函数
// Dog();
// 升级 ---> 构造函数 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>验证批量产生对象</title>
<script>
// 构造函数
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);
}
}
// 产生对象
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('骨头');
dog2.eat('奶');
// 带参数
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>
