在vue中使用@click.prevent方法后，页面未显示内容-PHP中文网问答

有人能找出问题可能来自哪里吗？？我没有收到任何错误，但是页面没有显示内容我正在尝试在不导航到页面的情况下显示页面的内容，但是当我点击链接时它不显示它们

<!DOCTYPE html>
<html lang="en">

    <head>
      <meta charset="UTF-8">
      <meta http-equiv="X-UA-Compatible" content="IE=edge">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <title>Vue基础</title>
      <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-4bw+/aepP/YC94hEpVNVgiZdgIC5+VKNBQNGCHeKRQN+PtmoHDEXuppvnDJzQIu9" crossorigin="anonymous">
      <script src="https://unpkg.com/vue@3"></script>
    </head>
    <body>
      <nav class="navbar navbar-expand-lg bg-body-tertiary">
        <div class="container-fluid">
            <ul class="navbar-nav me-auto mb-2 mb-lg-0">
              <li v-for="(value, index) in pages" class="nav-item" :key="index">
                <a class="nav-link active" 
                aria-current="page" 
                :href="value.link.url"
                :title="`This link goes to the ${value.link.text} page`"
                @click.prevent ="activePage = index"
                >{{value.link.text}}</a>
              </li>
            </ul>
    
        </div>
      </nav>
      <div id="content" class="container">
        <h1>{{ pages[activePage].pageTitle }}</h1>
        <p>{{ pages[activePage].content }}</p>
      </div>
    
      <script>
      const { createApp} = Vue
    
      createApp({
        setup() {
          
          return {
            activePage: 0,
            pages:[
              {
                link: {text: 'Home', url:'index.html'},
                pageTitle : 'Hello, Vue',
                content: 'Welcome to the world of vue'
            },
              {
                link: {text: 'Link', url:'link.html'},
                pageTitle : 'Hello, Vue',
                content: 'This is the link text'
            },
              {
                link: {text: 'Contact', url:'contact.html'},
                pageTitle : 'Hello',
                content: 'This is the contact page'
            }
            ]
            
          }
        }
      }).mount('body');
      </script>
    </body>

</html>

const { createApp, ref } = Vue; createApp({ setup() { const activePage = ref(0); return { activePage, pages: [{"link":{"text":"Home","url":"index.html"},"pageTitle":"Hello, Vue","content":"Welcome to the world of vue"},{"link":{"text":"Link","url":"link.html"},"pageTitle":"Hello, Vue","content":"This is the link text"},{"link":{"text":"Contact","url":"contact.html"},"pageTitle":"Hello","content":"This is the contact page"}], }; }, }).mount("#app");