function father (sex,name)
{ this.name=name;
this.sex=sex;
this.hao=function ()
{
alert(this.sex+","+this.name );
}
}
function child (sex,name,age)
{
this.method=father; //使FATHER成为自己的方法
// 使NAME成为自己的属性 this.method(name);
this.method(sex);
delete this.method;
this.age=age;
this.good=function () {
alert(this.age);
}
}
var fa=new father("man","he");
var ch=new child("woman","wei","26"); fa.hao();
ch.hao();
ch.good();
当同时传两中参数时有一个UNDEFINED,为什么呢?
{ this.name=name;
this.sex=sex;
this.hao=function ()
{
alert(this.sex+","+this.name );
}
}
function child (sex,name,age)
{
this.method=father; //使FATHER成为自己的方法
// 使NAME成为自己的属性 this.method(name);
this.method(sex);
delete this.method;
this.age=age;
this.good=function () {
alert(this.age);
}
}
var fa=new father("man","he");
var ch=new child("woman","wei","26"); fa.hao();
ch.hao();
ch.good();
当同时传两中参数时有一个UNDEFINED,为什么呢?
this.method(sex);
这两句合为一句,不然前一次的赋值就被覆盖,改为:
this.method(sex,name);
function father (sex,name){
this.name=name;
this.sex=sex;
this.hao=function (){
alert(this.sex+","+this.name );
}
}
function child (sex,name,age){
this.method=father; //使FATHER成为自己的方法
// 使NAME成为自己的属性
//this.method(name);
//this.method(sex);
this.method(sex,name);
delete this.method;
this.age=age;
this.good=function () {
alert(this.age);
}
}
var fa=new father("man","he");
var ch=new child("woman","wei","26");fa.hao();
ch.hao();
ch.good();
// 下面两行错了 你这样写 只相当于给father传递了一个参数sex
this.method(name);
this.method(sex);看到没你的函数: function father (sex,name)
this.method(sex , name)建议你用apply或者call方法