<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
</head>
<body>
<script>
(function () {
var n = "me";
function people(name){
this.oo=name;
}
people.prototype.say= function () {
alert("poe-hello"+this.oo+n)
};
window.people=people;
return n;
}());
(function () {
function student(name){
this.oo=name;
}
student.prototype=new people();
var sups=student.prototype.say;
student.prototype.say= function () {
sups.call(this);
alert("stu-hello"+this.oo);
}
window.student=student;
}());
var s=new student("ii");
s.say();
</script>
</body>
</html>
