javascript should i use object create code example

Example 1: how to create object js

function person(fname, lname, age, eyecolor){
  this.firstname = fname;
  this.lastname = lname;
  this.age = age;
  this.eyecolor = eyecolor;
}

myFather = new person("John", "Doe", 50, "blue");
document.write(myFather.firstname + " is " + myFather.age + " years old.");

Example 2: how to create a object in javascript

var about = {
  name:"lanitoman",
  age:1023,
  isHeProgrammer:true
}