vue加载flv格式的视频遇到的bug，及解决方法

vue加载flv格式的视频

遇到的问题描述
第一次打开时报错

```javascript

```javascript

```javascript
import flvjs from "flv.js";
 if (flvjs.isSupported()) {
   let videoElement = document.getElementById('videoElement');
     videoElement= document.getElementById('videoElement');
     this.flvPlayer = flvjs.createPlayer({
       type: 'flv',
       url: obj,
     });
     this.flvPlayer.attachMediaElement(videoElement);
     this.flvPlayer.load();
     this.flvPlayer.play();
 }

  <el-dialog title="查看录像视频" :visible.sync="dialogcreat" width="40%">
    <span>
      <video  id="videoElement" controls style="width:100%;height:100%;" >video>
    span>
  el-dialog>

问题原因

第一次加载页面时浏览器无法获取到videoElement对象，所以无法监听对应的事件
解决方法使用settimeout等页面加载完成后在获取Dom对象

解决后的javascript代码

if (flvjs.isSupported()) {
          let videoElement = document.getElementById('videoElement');
           setTimeout(function(){
            videoElement= document.getElementById('videoElement');
            this.flvPlayer = flvjs.createPlayer({
              type: 'flv',
              url: obj,
            });
            this.flvPlayer.attachMediaElement(videoElement);
            this.flvPlayer.load();
            this.flvPlayer.play();
          },100);
          console.log(videoElement,"....................")