View and Controller Code
Let’s explore the view and controller code.
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The application’s user interface (UI) consists of a start page that allows us to navigate to data management pages, such as books.html. Our data management page contains five sections: “Manage Books,” “List and Retrieve/Books,” “Create Book,” “Update Book,” and “Delete Book.” To display only one section at a time, set the CSS property display:none for all other sections.
Summary
Regarding the category attribute and ...