How to remove a component from a list in REACT?

Question

JavaScript

New to react! I'm studying this textbook at random , at the end I get a list of news, you can add news. I wanted to implement the functionality of removing an element from the list, it seems to work, but not quite what I wanted. Removes this code

window.ee.addListener('News.delete', function( idElem ) {

      var dataNew = self.state.news;

      var nextNews = dataNew.map(item => item.id !== idElem ? item : null);
      var deleteNews = nextNews.filter(item => item);

      self.setState({ news: deleteNews })
    });

How can you make it easier? Thank you!

Answer 1

Try deleting the resulting key with delete
var nextNews = delete dataNew[idElem ]