var Mammal=function(name){ this.name=name; }; Mammal.prototype.get_name=function(){ return this.name; }; Mammal.prototype.says=function(){ return this.saying || ""; }; var myMammal=new Mammal("Herb the Mammal"); var name=myMammal.get_name();alert(name)Function.method("inherits",function(Parent){ this.protetype=new Parent(); return this; });//這裡報錯——沒有該方法。這個Function.method（）方法不應該是系統方法嗎？ var Cat=function(name){ this.name=name; this.saying="meow"; } .inherits(Mammal) .method("purr",function(n){ var i,s=""; for(i=0;i<n;i+=1){ if(s){ s+="-"; } s+="r"; } return s; }) .method("get_name",function(){ return this.says()+" "+this.name+" "+this.says(); }); var myCat=new Cat("Henrietta"); var says=myCat.says();alert("says"+says) var purr=myCat.purr(5);alert(" purr"+purr) var name=myCat.get_name();alert(" name"+name)