Using JavaScript to imitate oop programming methods

First,

First, use the keyword function to define a class

function Shape1(ax,ay) {//此时将function看成声明类的标志
    var x=0;
    var y=0;
    var  init=function () {//构造函数   对内部的变量赋值
        x=ax;
        y=ay;
    }
init();//构造函数的调用
     this.getX=function () {//this声明公有函数   var 声明私有   get方法
      return x;
    }
}

Then, the instantiation + call of the object

Second,

Static properties and static methods

Static methods in JavaScript act on classes rather than objects.

First, For classes declared using function

(1) First, define a class

function Person() {this.Name="小李"};

(2) Then, add static variables and static methods to the class

 Person.age=0;
    Person.ShowName=function (obj) {
        console.log(obj.Name)//此时的Name是Person对象类下面全局变量，需要Person对象方可访问
    };

(3 ) Call

##

Person.ShowName(new Person());

Summary: First have the class, then add static members ,

Person is a class that can be instantiated. There are static members below that need to be instantiated. In order to access

2. Classes (objects) without function declarations --Simple class

(1) First there is a class

##

var a={};//一个类

(2) Add attributes to the class

a["name"]="1";//添加属性

(3) Call

alert(a.name);

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