<template>
  <div id="app">
    <h2 v-text="appname" ref="title"></h2>
    <button  ref = ‘btn‘ @click="show">点我显示</button>
  </div>
</template>

<script>
    export default {
        name: ‘app‘,
        data() {
            return{
                appname:"666"
            }
        },
        methods:{
            show(){
                console.log(this.$refs);

            }
        }
}
</script>

<style>
</style>