标记为已读

本课属于 Coddy JavaScript 学习旅程的“逻辑与流程”单元。第 46 课，共 65 课。

挑战

简单

在 switch 语句中添加一个新的 markAsRead case。此操作应将图书标记为已读，并添加评分。

对于 markAsRead case：

currentData 参数是一个对象，包含：
- bookId（数字）
- rating（1 到 5 之间的数字）
在图书馆中查找 id 匹配的图书
验证评分是否为 1 到 5 之间的数字
如果找到图书且评分有效：
- 将 isRead 设置为 true
- 将 rating 设置为提供的值
向 results 数组添加相应的消息：
- 成功更新时使用 Book marked as read!
- 评分无效时使用 Invalid rating! Please rate between 1 and 5
- 图书 id 不存在时使用 Book not found!

亲手试试

// Initialize library data
const libraryData = {
    books: [
        {
            id: 1,
            title: "The Great Gatsby",
            author: "F. Scott Fitzgerald",
            year: 1925,
            genre: "Fiction",
            isRead: false,
            rating: 0,
            borrowed: false,
            borrowedBy: "",
            borrowDate: ""
        }
    ],
    readers: [
        {
            name: "John Smith",
            favoriteGenre: "Fiction",
        }
    ]
};

function manageLibrary(actions, data) {
    let results = [];
    
    for (let i = 0; i < actions.length; i++) {
        const currentAction = actions[i];
        const currentData = data[i];
        
        switch (currentAction) {
            case 'printBooks':
                results.push(libraryData.books);
                break;
            case 'printReaders':
                results.push(libraryData.readers);
                break;
            case "addBook":
                // Add a new book to the library
                let newBook = {
                    id: libraryData.books.length + 1,
                    title: currentData.title,
                    author: currentData.author,
                    year: currentData.year,
                    genre: currentData.genre,
                    isRead: false,
                    rating: 0,
                    borrowed: false,
                    borrowedBy: "",
                    borrowDate: ""
                };
                libraryData.books.push(newBook);
                results.push("Book added successfully!");
                break;
            case "searchByTitle":
                // Search for books by title
                let searchResults = [];
                for(let i = 0; i < libraryData.books.length; i++) {
                    if(libraryData.books[i].title.toLowerCase().includes(currentData.toLowerCase())) {
                        searchResults.push(libraryData.books[i]);
                    }
                }
                results.push(searchResults);
                break;

          case "filterByGenre":
                // Filter books by genre
                let genreResults = [];
                for(let i = 0; i < libraryData.books.length; i++) {
                    if(libraryData.books[i].genre === currentData) {
                        genreResults.push(libraryData.books[i]);
                    }
                }
                results.push(genreResults);
                break;
            default:
                results.push("Invalid action!");
        }
    }

    return results;
}