Vip4.0W/12.vue3/project1/src/components/Demo6.vue

<template>
  <div>
    <h1>Demo6--标签Ref</h1>
    <h3 ref="weather">今天天气真好</h3>
    <button @click="showMain">输出</button>
  </div>
</template>

<script lang="ts" setup>
import {ref,reactive} from "vue" 
let weather = ref(111);
console.log(weather.value,'初始化',weather)
function showMain() {
    console.log(weather.value,'输出')
}
</script>

<style lang="scss" scoped>
</style>