​

  let book = {

    title:"To the Lighthouse",

    author: "Virginia Woolf",

    year: 1927,

    pages: 209

  }

​

  let allKeys = Object.keys(book)

  print('keys', allKeys)

​

  let allValues = Object.values(book)  

  print('values', allValues)

​

  for (const [key, value] of Object.entries(book)){

    print(key, '->', value)   

  }

​

}

​