Build a Library Manager - Step 14

JavaScript
1

Tell us what’s happening:

I get the wanted specific result but the code does not pass this time. Anyone can help me?

  function getBooksByAuthor(catalog, author) {
  let arr = catalog.filter(book => book.author.includes(author));
  return [arr, arr.length];
}

console.log(getBooksByAuthor(library, "Patrick Bet-David"));

Your code so far

const library = [
  {
    title: 'Your Next Five Moves: Master the Art of Business Strategy',
    author: 'Patrick Bet-David and Greg Dinkin',
    about: 'A book on how to plan ahead',
    pages: 320,
  },
  {
    title: 'Atomic Habits',
    author: 'James Clear',
    about: 'A practical book about discarding bad habits and building good ones',
    pages: 320,
  },
  {
    title: 'Choose Your Enemies Wisely: Business Planning for the Audacious Few',
    author: 'Patrick Bet-David',
    about:
      "A book that emphasizes the importance of identifying and understanding one's adversaries to succeed in the business world",
    pages: 304,
  },
  {
    title: 'The Embedded Entrepreneur',
    author: 'Arvid Kahl',
    about: 'A book focusing on how to build an audience-driven business',
    pages: 308,
  },
  {
    title: 'How to Be a Coffee Bean: 111 Life-Changing Ways to Create Positive Change',
    author: 'Jon Gordon',
    about: 'A book about effective ways to lead a coffee bean lifestyle',
    pages: 256,
  },
  {
    title: 'The Creative Mindset: Mastering the Six Skills That Empower Innovation',
    author: 'Jeff DeGraff and Staney DeGraff',
    about: 'A book on how to develop creativity and  innovation skills',
    pages: 168,
  },
  {
    title: 'Rich Dad Poor Dad',
    author: 'Robert Kiyosaki and Sharon Lechter',
    about: 'A book about financial literacy, financial independence, and building wealth. ',
    pages: 336,
  },
  {
    title: 'Zero to Sold',
    author: 'Arvid Kahl',
    about: 'A book on how to bootstrap a business',
    pages: 500,
  },
];

console.log("Books in the Library:\n");

function getBookInformation(catalog) {
  return catalog.map(book => `${book.title} by ${book.author}`).join("\n");
}

console.log(getBookInformation(library));

console.log("\nList of book summaries:\n");

function getBookSummaries(catalog) {
  return catalog.map((book) => book.about).join("\n");
}

console.log(getBookSummaries(library));

console.log("\nList of books by Arvid Kahl:\n");


// User Editable Region

  function getBooksByAuthor(catalog, author) {
  let arr = catalog.filter(book => book.author.includes(author));
  return [arr, arr.length];
}

console.log(getBooksByAuthor(library, "Patrick Bet-David")); 

// User Editable Region

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Challenge Information:

Build a Library Manager - Step 14

https://www.freecodecamp.org/learn/full-stack-developer/workshop-library-manager/step-14

2

Instead of using include, try a direct comparison with ===.

Instead of returning an array containing the filtered array and the length, try returning just the filtered array.

3

I totally agree with your includes() logic and opened a GitHub ticket in July to get that changed.

4

function getBooksByAuthor(catalog, author) {

return catalog

.filter(book => book.author === author)

}