Defining Accessors via an Object Literal & Property Descriptors

settingAndGetting.js

// Via Object Literal
var obj = {
  
  get foo() {
    return 'getter';
  },
  
  set foo(value) {
    console.log('setter: ' + value);
  }
  
};

// Via Property Descriptors
var obj = Object.create(Object.prototype, { // object with property descriptors
      foo:  { // property descriptor
             get: function () {
             return 'getter'
             },
             enumerable: true,
             configurable: false
             //etc.
            },
             set: function (value) {
             console.log('setter: '+value);
            }
      }
    }
);