<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> <head> <meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> <title>Document</title> </head> <body> <script> /** * @param name * @param age * @param work */ function Person(name,age,work){ this.name = name; this.age = age; this.work = work; this.friends = ["Tom","Lily"]; } Person.prototype = { constructor:Person(), sayName:function(){ alert(this.name); } } var person1 = new Person('zhangsan',21,'worker'); person1.friends.push('hanmeimei'); var person2 = new Person('lisi',32,'techer'); // alert(person1.friends); // alert(person2.friends); person1.sayName(); </script> </body> </html>