jOOPLJavaScript 面向对象框架

jOOPL 是一个 JavaScript 面向对象框架，全称是："JavaScript Object-Oriented Programming Library".

是一个轻量级、易用的面向对象编程库，允许使用纯 JavaScript 实现高级面向对象特性，包括：

• 继承. 


• 多态


• 封装


• 组合

示例代码：

// First of all, we are going to declare a namespace for the class

$namespace.register("Joopl.Samples");



// Next part will be about designing the whole class

Joopl.Samples.Polygon = $class.declare(

// The constructor

function() {

    // This is very recommended: if you declare a class field in the constructor,

    // it will hold a default value instead of undefined

    this.$_.args = null;

},

{

  // Sets an object that will hold the arguments to calculate the polygon's area

  set_Args: function(value) {

    this.$_.args = value;

  },

  

  // Gets an object that will hold the arguments to calculate the polygon's area

  get_Args: function() {

    return this.$_.args;

  },

  

  // The method to calculate the area. Check that its body does implement nothing.

  // Derived classes will be the ones responsible of providing the formula to make the calculation.

  CalculateArea: function() {

  }

}

);