xxxxxxxxxx<html><head><meta charset="utf-8"><title>W3Cschool教程(w3cschool.cn)</title></head><body><script>function person(firstname,lastname,age,eyecolor){ this.firstname=firstname; this.lastname=lastname; this.age=age; this.eyecolor=eyecolor;}myFather=new person("John","Doe",50,"blue");document.write(myFather.firstname + " is " + myFather.age + " years old.");</script></body></html>