问两次按键不同功能运行

EN

let playing = false;

        const playAllVideos = () => console.log('playing all videos');

        const pauseAllVideos = () => console.log('paused all videos');

        const playPause = e => {
          let key = e.keyCode || e.which;//Get key
          if(key == 32) { //Space key
            if(playing) {//If playing turn all videos off
              pauseAllVideos();
              playing = false;
            } else {//vise versa
              playAllVideos();
              playing = true;
            }
          }
        }

        window.addEventListener('keypress', playPause);

<p>Press Space</p>