const wilder={
    name : 'Sylene',
    city: 'Arbonne',
    age: 30,
    isLearningJs: true
}

console.log(wilder.hasOwnProperty('name'));
console.log(wilder.has('isLearningPhp')('isLearningPhp')('isLearningPhp')OwnProperty('isLearningPhp'));
console.log(wilder.hasOwnProperty('isLearningJs'));

wilder.knowsHtml = true;
wilder.knowsCss = true;
console.log(wilder);
wilder.hobbies = ["skate", "drugs", "rock'n'roll"];
console.log(wilder.hobbies[1]);

delete wilder.name

console.log(wilder)

wilder.lastName='guiberteau'
wilder.firstName='jean-maxime'

console.log(wilder)