简单教程
提交运行
代码编辑器：
<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>
运行结果：