/Javascript/React/Filter-vs-map-reactjs-and-jsx

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} />
      );
    })
}

Source: stackoverflow.com

Similar codes

0 vote348 views1 answer
React router history not defined
Javascript React
29 votes371 views6 answers
React background image
Javascript React
8 votes397 views2 answers
React fragment
Javascript React
0 vote395 views1 answer
Cannot find module '@babel/runtime-corejs2/helpers/interoprequiredefault' in react native
Javascript React
0 vote408 views2 answers
React Class components LifeCycles
Javascript React
0 vote363 views1 answer
React input value set state on change
Javascript React
2 votes373 views2 answers
React native dimensions window vs screen
Javascript React
33 votes368 views2 answers
Routing in react
Javascript React
22 votes397 views4 answers
Reactjs copytoclipboard box
Javascript React
0 vote396 views1 answer
Reduce to calculate sum react
Javascript React