qhvjif5e

1function User(firstName,lastName,age,gender){
2   this.firstName = firstName;
3   this.lastName = lastName;
4   this.age = age;
5   this.gender = gender;
6}
7 
8var user1 = new User('shyam','goyal',30,'male');
9 
10console.log(typeof(user1));
11 
12User.prototype.emaildomain = '@gmail.com'
13 
14User.prototype.getemailaddress = function(){
15   return this.firstName + this.lastName + this.emaildomain
16}
17 
18console.log(user1.getemailaddress());
19