Wording differences ES3, ES5, ES6 object proxy

ES3 proxy object wording:

console.log ( 'private variables defined ES3 written:' )
 // ES3 
var the Person = function () {
     var Data = { 
        name: 'ES3' , 
        Age: 14 , 
        Sex: 'NV' 
    } 
    // read the API 
    the this .get = function (Key) {
         return Data [Key] 
    } 
    // write the API 
    the this .set = function (Key, value) {
         IF (Key! == 'Sex' ) { 
            Data [Key] = value 
        }
    } 
}
 // declare an instance 
var Person = new new the Person ();
 // read 
console.table ({name: person.get ( ' name'), age: person.get ( 'age'), sex: person. GET ( 'Sex')}); 
// modify 
person.set ( 'name', 'C-ES3')       // change the name of ES3-C 
console.table ({name: person.get ( 'name'), Age: person.get ( 'Age'), sex: person.get ( 'sex' )}); 
person.set ( 'sex', 'nan')          // modify sex as nan modification failed because protection is provided 
console.table ({name: person.get ( ' name'), age: person.get ( 'age'), sex: person.get ( 'sex')});

ES5 objects agency wording:

console.log ( 'private variables defined ES5 written:' )
 // ES5 
var the Person = { 
   name: 'ES5' , 
   Age: 14 
} 
// set the protection, can not be written 
Object.defineProperty (the Person, 'Sex' , { 
   Writable : to false , 
   value: 'NV' 
}) 
// read 
console.table ({ 
   name: person.name, 
   Age: person.Age, 
   Sex: Person.sex 
}) 
// modify 
person.name = 'c-ES5'        // change the name of the ES5-C
    console.table ({ 
   name: person.name, 
   Age: person.Age,
   sex: Person.sex 
}) 
Person.sex = 'nan'           // modify sex as nan modification fails, because the protection provided 
console.table ({ 
    name: person.name, 
    Age: person.Age, 
    sex: Person.sex 
})

ES6 proxy object wording:

console.log ( 'private variables defined ES6 written:' ) 
the let of Person1 = { 
    name: 'ES6' , 
    Age: 14 , 
    Sex: 'NV' 
} 
// set the object proxy 
the let PERSON1 = new new the Proxy (of Person1, {
     // read 
    GET (target, Key) {
         return target [Key] 
    }, 
    // write 
    SET (target, Key, value) {
         IF (Key == 'Sex'! {) 
           target [Key] = value 
        } 
    } 
}); 
// read the
 console.table ({
    name: person1.name, 
    Age: person1.age, 
    Sex: person1.sex 
}) 
// change the name is for ES6-C 
person1.name = 'C-for ES6' 
console.table ({ 
    name: person1.name, 
    Age: PERSON1 .age, 
    sex: person1.sex 
}) 
// modify failed to modify sex nan, because protection is provided 
person1.sex = 'NaN3' 
console.table ({ 
    name: person1.name, 
    Age: person1.age, 
    sex: person1.sex 
})