vue 获取dom的css属性值

<template>
<div id="topInfo" ref="topInfo" style="width: 200px;height: 200px;background-color: #0bb20c">
<img id="imgInfo" ref="imgInfo" src="./20151205231902_xe2kG.jpeg" alt="" height="200px" >
</div>
</template><script>
export default {
name: "center",
mounted() {
//div 标签获取的方法
let topInfowidth = this.$refs.topInfo.style.width;
let topInfoheight = this.$refs.topInfo.style.height;
console.log("topInfo:"+topInfowidth+" "+topInfoheight) console.log("=================================================")
//img 标签获取的方法
let imgInfowidth = this.$refs.imgInfo.width;
let imgInfoheight = this.$refs.imgInfo.height;
console.log("imgInfo:"+imgInfowidth+" "+imgInfoheight)
let src = this.$refs.imgInfo.src;
console.log("src:"+src) } //获取dom元素高度通过在标签里面定义ref属性，用this.$refs.自定义名称.offsetHight;去获取。
}
</script><style scoped>
#topInfo{
overflow: hidden;
}
</style>