How to display the properties of an object using get method in JavaScript?

Question

Here is my code,it does not get the values of the properties.I have used setmethod to set the property values given by the user.

var person ={
firstname:"",
lastname:"",
age:"",
qualification:"",
    set personinfo(firstname){
        this.firstname=firstname;
        },
        set personinfo(lastname){
            this.lastname=lastname;
        },
        set personinfo(age){
            this.age=age;
        },
        set personinfo(qualification){
            this.qualification=qualification
        },
    get displayinfo(){
        return "Name " + this.firstname +" " +this.lastname+"\nAge "+ this.age +"\nQualification " +this.qualification;

    }
}
firstname=window.prompt("Enter your first name");
lastname=window.prompt("Enter your last name");
age=window.prompt("Enter your age");
qualification=window.prompt("Enter your qualification");
console.log(person.displayinfo);

Answer 1

You forgot to add person.. So the code should look like this.

person.firstname=window.prompt("Enter your first name");
person.lastname=window.prompt("Enter your last name");
person.age=window.prompt("Enter your age");
person.qualification=window.prompt("Enter your qualification");

Answer 2

For cleaning up your code, I would suggest the following. setInfo now dynamically changes your objects' key values.

const person = {
  firstName: "",
  lastName: "",
  age: "",
  qualification: "",

  setInfo: function(key, value) {
    this[key] = value;
  },

  getInfo: function() {
      return `Name: ${this.firstName} ${this.lastName}, \nAge: ${this.age}, \nQualification: ${this.qualification}`
  },
};

Output in console:

Answer 3

Change your code to this:

var person ={
firstname:"",
lastname:"",
age:"",
qualification:"",
    set firstname(value){
        this.firstname=value;
        },
        set lastname(value){
            this.lastname=value;
        },
        set age(value){
            this.age=value;
        },
        set qualification(value){
            this.qualification=value;
        },
    get displayinfo(){
        return "Name " + this.firstname +" " +this.lastname+"\nAge "+ this.age +"\nQualification " +this.qualification;

    }
}
person.firstname=window.prompt("Enter your first name");
person.lastname=window.prompt("Enter your last name");
person.age=window.prompt("Enter your age");
person.qualification=window.prompt("Enter your qualification");
console.log(person.displayinfo);