Build a Library Manager - Step 18

JavaScript
1

Tell us what’s happening:

Your getTotalPages function should return the total number of pages in the books from the array passed to it. i have done a lot of things and the output is correct but it is still showing me thi error

Your code so far


// User Editable Region

// Sample data with a 'pages' property for each book
const library = [
  {
    title: "The Hitchhiker's Guide to the Galaxy",
    author: "Douglas Adams",
    about: "A comedic sci-fi adventure.",
    pages: 224,
  },
  {
    title: "To Kill a Mockingbird",
    author: "Harper Lee",
    about: "A story about racial injustice in the American South.",
    pages: 336,
  },
  {
    title: "Zero to Sold",
    author: "Arvid Kahl",
    about: "A book on how to bootstrap a business.",
    pages: 204,
  },
  {
    title: "1984",
    author: "George Orwell",
    about: "A dystopian social science fiction novel.",
    pages: 328,
  },
  {
    title: "The Embedded Entrepreneur",
    author: "Arvid Kahl",
    about: "A book focusing on how to build an audience-driven business.",
    pages: 280,
  },
  {
    title: "Atomic Habits",
    author: "James Clear",
    about: "A practical book about discarding bad habits and building good ones.",
    pages: 320,
  },
];

/**
 * Calculates the total number of pages for all books in an array using reduce().
 * @param {Array<Object>} books - An array of book objects, where each has a 'pages' property.
 * @returns {number} The total page count.
 */
const getTotalPages = (books) => {
  // Use the reduce() method to sum the 'pages' property of each book.
  // 'acc' is the accumulator, which holds the running total.
  // 'book' is the current book object.
  // The initial value of the accumulator is 0.
  return books.reduce((acc, book) => acc + book.pages, 0);
};

// Log the initial message
console.log("\nTotal number of pages for all library books:\n");

// Call the getTotalPages function and log the result to the console
console.log(getTotalPages(library));

// User Editable Region

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Challenge Information:

Build a Library Manager - Step 18

2

Your function is correct but your code is not passing because you appear to have removed a lot of other code from previous steps.

Hit the Reset button to restore the starting code for this step and then add the new function and console.log() statement again, without modifying or removing any other code.