javascript 继承

1.prototype方式  

    function Father(name){

           this.name = name ;

   }

   function Children(age){
           this.age = age ;

   }

   Children.prototype = new Father("andy");

   var c = new Children(28);    // Father{ age=28,name="andy"}

2.call/apply方式

   function Father(name){

           this.name = name ;

   }

   function Children(name,age){
           this.age = age;

           Father.call(this,name);

   }

  var c = new Children('andy' , 28);   // Children{ age=28,name="andy"}