Javascript 创建类并动态添加属性及方法的简单实现

function MyClass() {    //This function is same as a constructer    alert("New Object Created");  } //Creating Object  var MyObject = new MyClass ();  NewObject.prototype =  {    //Adding Method named "MyMethod"    MyMethod: function(){alert("My Method");} ,      //Adding property named "MyProperty"    MyProperty: "My Property"  }  //Calling Method  MyObject.MyMethod();   //Assigning Property  MyObject.MyProperty = "My Property Value changed";