HTML在任意节点上添加属性“ref”
<span ref="span_01">span_01</span> <button @click="consoleDOM()">consoleDOM</button>
SCRIPT vue里通过 this.$refs.xxx 获取
consoleDOM() { window.console.log(this.$refs.span_01) }
vue通过ref获取dom节点
原文：https://www.cnblogs.com/mahoshojo/p/12238301.html
