JS defineProperty and prototype

Question

As you know we can define getters and setters in JS using defineProperty(). I\'ve been stuck when trying to extend my class using defineProperty().

Answer 1

It seems to me, that when you defineProperties for prototype, all instances shares that properties. So the right variant could be

var User = (function(){
// constructor
function User(id, name){
    this.id     = id
    this.name   = name

    Object.defineProperty(this, "name", {
        get: function(){ return name },
        set: function(new_value){
            //Some business logic, upperCase, for example
            new_value = new_value.toUpperCase();
            name = new_value
        }
    })
}
return User;
})();