vue.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <title>Vue</title>
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <script src="https://unpkg.com/vue@3"></script>
    <style>
      /* css 작성 */
    </style>
  </head>
  <body>
    <div id="app">
      <!-- HTML 작성 -->
    </div>

    <script>
      const app = Vue.createApp({
        /////////////////optionAPI
        // mounted() {},
        // data() {
        //   return {
        //     count: 0
        //   };
        // },
        // methods: {},
        /////////////////compositionAPI
        // setup() {
        //   const count = ref(0);
        //   return {
        //     count,
        //   };
        // },
      });

      app.mount("#app");
    </script>
  </body>
</html>