Vue - ref和$refs用法

<template>
  <div >
    <div ref="text">哈哈</div>
  </div>
</template>

  methods: {
    onClick: function() {
      this.$refs.text.style.color = "red"; //更新样式
      this.$refs.text.innerText = "hahaha"; //更新值
      console.log(this.$refs.text);
    }
  }