目录
0.码仙励志
孤独是每个强者必须经历的坎
1.普通创建对象方法
<script>
var obj = new Object();
obj.name = "小明";
obj.age = 20;
obj.laugh = function () {
console.log("笑");
};
obj.cry = function () {
console.log("哭");
};
console.log(obj.name);
obj.cry();
</script>
2.工厂模式创建对象
<script>
var pop = function (name, age) {
var obj = new Object();
obj.name = name;
obj.age = age;
obj.laugh = function () {
console.log("笑");
};
obj.cry = function () {
console.log("哭");
};
return obj;
}
var pop1 = pop("小明", 20);
var pop2 = pop("小刚", 30);
console.log(pop1.name);
pop2.cry();
</script>
3.自定义构造函数创建对象
<script>
//自定义构造函数名字首字母大写
function Person(name, age) {
var obj = new Object();
obj.name = name;
obj.age = age;
obj.laugh = function () {
console.log("笑");
};
obj.cry = function () {
console.log("哭");
};
return obj;
}
var P1 = Person("小明", 20);
var P2 = Person("小刚", 30);
console.log(P1.name);
P2.cry();
</script>
4.字面量方式创建对象
1.未优化
<script>
var obj = {};
obj.name = "小明";
obj.age = 20;
obj.laugh = function () {
console.log("笑");
};
obj.cry = function () {
console.log("哭");
};
console.log(obj.name);
obj.cry();
</script>
2.优化后
<script>
var obj = {
name: "小明",
age: 20,
laugh: function () {
console.log("笑");
},
cry: function () {
console.log("哭");
}
};
console.log(obj.name);
obj.cry();
</script>
5.JSON格式的数据
<script>
//创建对象
var obj = {
"name": "小明",
"age": "20",
"sex": "男"
};
//遍历对象的属性
for (var key in obj) {
//对象中确实有这个属性，用 对象.属性名字 或 对象[属性名字]
//对象中没有这个属性，用 对象[属性名字]
console.log(key + "====" + obj[key]);
}
console.log(obj.key);
</script>