反应：如何检查X是否被选中

Question

我正在尝试开发已被更改的React Component。因此，我设置了isSelected来检查是否选中了该项目，如下所示：

src / components / common / Youtube.js

const Youtube = ({ video, handleSelect, selectedVideos }) => {
  const url = "https://www.youtube.com/embed/" + video.id.videoId;
  const videoInfo = video.snippet;
  const isSelected = selectedVideos.find(v => v.uid === video.id.videoId);

  return (
    <div>
      {isSelected ? (
        <Button onClick={() => handleSelect(video.id.videoId)>
         <p>Select</p>
        </Button>
      ) : (
        <p>Selected</p>
      )}
    </div>
  );
};

但是isSlected无法正常工作。选择该项目而不加载时，该应用程序应该可以无缝运行。

src / components / common / YoutubeList.js

const YoutubeList = ({ videos, handleSelect, selectedVideos }) =>
  videos.map(video => (
    <Youtube
      video={video}
      handleSelect={handleSelect}
      selectedVideos={selectedVideos}
    />
  ));

export default YoutubeList;

src / components / Home.js

const YOUTUBE_API_KEY = process.env.REACT_APP_YOUTUBE_API_KEY;

class Home extends React.Component {
  constructor(props) {
    super(props);

    this.state = {
      videos: [],
      selectedVideos: []
    };
  }

  onSerchYoutube = keyword => {
    const url = `https://www.googleapis.com/youtube/v3/search?type=video&part=snippet&q=${keyword}&maxResults=3&key=${YOUTUBE_API_KEY}`;

    axios
      .get(url)
      .then(response => {
        this.setState({
          videos: response.data.items
        });
      })
      .catch(() => {
        console.log("Failed to fetch videos :(");
      });
  };

  _handleSelect = id => {
    const { selectedVideos } = this.state;
    selectedVideos.push({ uid: id });
    console.log("selected!" + id);
    console.log("selected", selectedVideos);
  };

  render() {
    return (
      <div>
        <div>
          <Header title={"Home"} />
          <SearchForm onSerchYoutube={this.onSerchYoutube} />
          <YoutubeList
            videos={this.state.videos}
            handleSelect={this._handleSelect}
            selectedVideos={this.state.selectedVideos}
          />
        </div>
      </div>
    );
  }
}

export default Home;