没有什么难度，主要加深对JavaScript的理解
var Student = function (name, no) { var name = name; //相当于私有属性 var no = no; this.setName = function (value) { name = value; for (var i = 0; i < this.nameModifyListeners.length; i++) { this.nameModifyListeners[i](this); } } this.getName = function () { return name; } this.setNo = function (value) { no = value; } this.getNo = function () { return no; } this.sayInfo = function () { alert(name + "," + no); }; /** * function(Student) */ this.nameModifyListeners = []; }
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head >
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<script src="Scripts/Student.js" type="text/javascript"></script>
<script type="text/javascript">
var stu = new Student("LYX", "2008");
stu.sayInfo();
stu.nameModifyListeners.push(onNameChange);
stu.setName("LYX2");
function onNameChange(student) {
alert("student info modified!! name:"+student.getName()+" no:"+student.getNo());
}
</script>
</head>
<body>
</body>
</html>