javascript继承之原型式继承(四)

javascript之父道格拉斯在2006年给出了这样一串代码,来实现继承.

 function object(o) {
             function F() { }
             F.prototype = o;
             return new F();
         }

下面来看看这个函数是如何实现继承的.

 var Human = {
             name: "guo",
             colors: ["red","black"]
         }
         var one = object(Human);
         one.colors.push("yellow");

         var two = object(Human);
         two.colors.push("green");

         alert(two.colors); //red,black,yellow,green

在ECMAScript5中,这个方法得到了封装.Object.create();

 var Human = {
             name: "guo",
             colors: ["red", "black"]
         }
         var one = Object.create(Human);
         one.colors.push("yellow");
         var two = Object.create(Human);
         two.colors.push("green");
         alert(two.colors);// red,black,yellow,green