通过 JavaScript，您能够定义并创建自己的对象。
创建新对象有两种不同的方法：
person=new Object(); person.firstname="Bill"; person.lastname="Gates"; person.age=56; person.eyecolor="blue";
或者
person={firstname:"John",lastname:"Doe",age:50,eyecolor:"blue"};
//构造函数法创建类
//构造函数法创建类
function person(firstname,lastname,age,eyecolor) { this.firstname=firstname; this.lastname=lastname; this.age=age; this.eyecolor=eyecolor; }
myFather=new person("Bill","Gates",56,"blue");
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <script> function Employee(name,jobtitle,born){ this.name=name; this.jobtitle=jobtitle; this.born=born; } var employee=new Employee("Fred Flintstone","Caveman",1970); //1.在类的原型对象中进行属性扩展操作 Employee.prototype.salary=null; employee.salary=20000; document.write(fred.salary); //2.在类的原型对象中进行方法扩展操作 Employee.prototype.sayHello = function () { alert(‘Hello:‘ + this.name); } employee.sayHello(); // => 弹出 Hello:tom </script> </body> </html>
参考：https://www.cnblogs.com/polk6/p/4492757.html
原文：https://www.cnblogs.com/zhaoyanhaoBlog/p/9182439.html