<div class="video_wrapper" v-for="item in urlList">
          <video 
          id="my_video_1"            
          class="video-js vjs-default-skin vjs-big-play-centered my_video_1" 
          preload="auto" 
          autoplay="autoplay"
          controls="controls"
          data-setup="{}">
            <source :src="item.m3u8_url" type="application/x-mpegURL">
          </video>
        </div>
 the current practice is that the playback url of multiple videos is stored in  urlList , and then stored in the src in  source  using v-for traversal. 
 the initialization code is here 
          if (this.urlList.length > 1) {
            this.urlList.map((val, index) => {
              this.player.push(videoJs(document.querySelectorAll("-sharpmy_video_1")[index], {flash: options, html5: options}));
            });
            this.player.map((item) => {
              item.play();
            });
          } else {
            this.player.push(videoJs(document.querySelector("-sharpmy_video_1"), {flash: options, html5: options}));
            this.player[0].play();
          }
this doesn"t work. Is there a boss to help
