let obj =

{

key: 'value'

};

console.log(obj);

// Access value by key

console.log(obj.key);

// Access value by property name

console.log(obj['key']);

console.log();

let data =

{

name: 'Billy',

age: 16,

profession: 'Developer',

married: false

};

// Key

console.log(data);

console.log(data.name);

console.log(data.age);

console.log(data.profession);

console.log(data.married);

// Property

console.log(data['name']);

console.log(data['age']);

console.log(data['profession']);

console.log(data['married']);

// Concat the values

console.log(data.name + ' is a ' + data.age + ' year old ' + data.profession + '. He is ' + (data.married ? 'married' : 'not married') + ' yet.');

console.log();

let items =

{

firstName: 'Sendy',

lastName: 'Friscilla',

information:

{

age: 10,

profession: 'Student',

hobby: ['Playing games', 'Reading books', 'Watching movies']

}

}

console.log(`Name: ${items.firstName} ${items.lastName}`);

console.log(`Information: Age ${items.information.age}, Profession ${items.information.profession}, Hobby ${items.information.hobby}`);

console.log(`Hobby: ${items.information.hobby[0]}`);