Getters are convenient methods to get the value of specific properties; as the name suggests, setters are methods that set the value of a property. Often, you may want to derive a value based on some other values. Traditionally, getters and setters used to be functions such as the following:
var person = {
firstname: "Albert",
lastname: "Einstein",
setLastName: function(_lastname){
this.lastname= _lastname;
},
setFirstName: function (_firstname){
this.firstname= _firstname;
},
getFullName: function (){
return this.firstname + ' '+ this.lastname;
}
};
person.setLastName('Newton');
person.setFirstName('Issac');
console.log(person.getFullName());As you can see, setLastName(), setFirstName(), and getFullName() are functions used to do get and set of properties. Fullname is a derived property by concatenating the firstname and lastname properties. This is a very common use case and ECMAScript 5 now provides you with a default syntax for getters...