JavaScript Getters and setters on prototype getter setter prototype javascript,setter getter prototype

Not directly related to your question, but since you mentioned "getters and setters" on your title, I thought I might complement the answers with ES5 getters and setters:

function Person(age, name) {
  this.name = name;
  this.age  = age;
};

Object.defineProperty(Person.prototype, "age", {
  get: function() {
    return this._age;
  },

  // Added a few things to demonstrate additional logic on the setter
  set: function(num) {
    num = parseInt(num, 10);
    if(num > 0) {
      this._age = num;
    }
  }
});

Then, it can be used transparently, as if it was a normal property:

var person = new Person(20, "Jane Doe");
person.age; // => 20

person.age = 15;
person.age; // => 15

person.age = "20";
person.age; // => 20 (number)

person.age = -2;
person.age; // => 20

Works on any recent browser, and IE >= 9.

Answer:1

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