本例使用函数来构造对象 - 在线编辑器

          <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>
        