一个由“大头儿子带小头儿子吃饭”引发的血案

在群里讨论JavaScript，然后得出了这几种写法，感觉是层层递进，想了想，最后选择发布成文章

({ baby : '大头儿子', dady : '小头爸爸', run : function() { console.log(this.dady+ this.callbaby() + this.eat()); }, callbaby : function() { return '叫'+this.baby+'去'; }, eat : function() { return '吃饭'; }, }).run(); function GoFood() { this.baby = '大头儿子'; this.dady = '小头爸爸'; }; GoFood.prototype.run = function() { console.log(this.dady+ this.callbaby() + this.eat()); }; GoFood.prototype.callbaby = function() { return '叫'+this.baby+'去'; }; GoFood.prototype.eat = function() { return '吃饭'; }; var GoFood1 = new GoFood(); GoFood1.run(); var eatObj = { baby : '大头儿子', dady : '小头爸爸', run : function(callback) { callback = (typeof callback == 'function' ) ? callback : function() {}; console.log(this.dady+ this.callbaby() + this.eat()+callback()); }, callbaby : function() { return '叫'+this.baby+'去'; }, eat : function() { return '吃饭'; }, } var eatObj1 = Object.create(eatObj); eatObj1.run(function() { return ',吃完了背小头儿子回去'; }); function Person(name){ this.name=name; } Person.prototype={ getHand:function(person){ console.log(this.name+"正在牵着"+person.name+"的手"); }, eat:function(rice){ console.log(this.name+"正在吃"+rice.name+"...."); } } function Rice(name){ this.name=name; } //***************给所有对象扩展一个继承的方法(extends继承)********** Object.prototype.extends=function(func){ for(var p in func.prototype){ this.prototype[p]=func.prototype[p]; } } //father function Father(name){ this.name=name; } Father.extends(Person); //爸爸要继承人的功能 Father.prototype.carry=function(person){ console.log(this.name+"正在背着"+person.name+"......"); } //小孩 function Children(name){ this.name=name; } Children.extends(Person);//小孩继承人的功能 var x=new Father("小头爸爸"); var d=new Children("大头儿子"); x.getHand(d); var p1=new Rice("水饺"); var p2=new Rice("炒粉"); x.eat(p1); d.eat(p2); x.carry(d);