[removed] How to add getter to an existing object

Question

I can have a getter in a JavaScript object like this:

var member = {
    firstName:"XYZ", 
    lastName:"zzz", 
    get fullName(){ return         


        

Answer 1

You can only use get and set in a Class, It's mean that getter and setter method. but you can add a function to class:

member.isGuest = function isGuest(){ return this.firstName=='Guest';}

member.isGuest()

the get means that property can be read! the set means that property can be write! You can look it in book 《JavaScript:The.Definitive.Guide》6edition the 6 chapter！