web250825/vue3/project3/src/App.vue

<template>
  <div>
    <Demo1></Demo1>
  </div>
</template>

<script>
import Demo1 from "./components/Demo1.vue";
export default {
  data() {
    return {};
  },
  components: {
    Demo1,
  },
  created() {
    console.log(this)
  }
};
</script>

<style>
</style>