<div class="imgBox" ref="imgBox">
	<img src="../../assets/images/current.jpg" ref="urlInfo" @load="urlInfo" />
</div>

//原始宽高
this.$refs.urlInfo.naturalWidth;
this.$refs.urlInfo.naturalHeight;

//渲染宽高(涉及加载问题后面补充，可以使用@load获取)
this.$refs.urlInfo.offsetWidth;
this.$refs.urlInfo.offsetHeight; 

methods: {
   //@load获取渲染的宽高
   urlInfo(e) {
     console.log(e.target.width);
     console.log(e.target.height);
   },
}