路由切换时，图片的url接受的流多次加载

<img  id="playUrl1" :src="playUrl1"
style="width: 100%; height: 100%"  />

beforeDestroy() {
//清除直播流
this.cleanMedia(“playUrl1”);
},

cleanMedia(id) {
let playItem = document.getElementById(id);
playItem.setAttribute(“src”, “”);
},