如何在Javascript中构造一个新类型？

Question

  

可能重复：
  How to “properly” create a custom object in JavaScript?

是否可以在Javascript中构建新类型？如果“一切都是对象”，那么对象构造函数是用于构造新类型的吗？如果是这样，这会使对象构造函数也类型化构造函数，对吧？非常感谢帮助，早上好Stack Overflow！

Answer 1

您可以使用以下代码创建新类，并为其添加方法和属性。

function ClassName() {

   //Private Properties
   var var1, var2;

   //Public Properties
   this.public_property = "Var1";

   //Private Method
   var method1 = function() {
      //Code
   };

   //Privileged Method. This can access var1, var2 and also public_property.
   this.public_method1 = function() {
      //Code
   };
}

//Public Property using "prototype"
ClassName.prototype.public_property2 = "Value 2";

//Public Method using "prototype"
//This can access this.public_property and public_property2. 
//But not var1 and var2.
ClassName.prototype.public_method2 = function() {
   //code here
}

//Create new Objects
var obj1 = new ClassName();
//Access properties
obj1.public_property1 = "Value1";

您还可以扩展现有的课程。

检查Crockford's website

感谢Glutamat和Felix Kling