Answers for "filter-vs-map-reactjs-and-jsx"

Javascript

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filter-vs-map-reactjs-and-jsx

{              
  books && books
    .filter(book => book.shelf.toLowerCase().includes(shelf.toLowerCase()))
    .map((book, index) => {
      return (
        <Book
           key={book && book.id ? book.id : index}
           changeShelf={this.props.changeShelf}
           book={book} />
      );
    })
}

Posted by: Guest on October-17-2021

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