public/01-vif-vfor/test-v3.html

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

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <!-- 过滤列表中项目 -->
  <!-- 浏览器控制台会报错：Uncaught TypeError: Cannot read properties of undefined (reading 'isActive') -->
  <!-- <div id="app">
    <div v-for="item in items" :key="item.id" v-if="item.isActive">
      {{ item.name }}
    </div>
  </div> -->

  <!-- 避免渲染应该被隐藏的列表 -->
  <div id="app">
    <div v-for="item of items" :key="item.id" v-if="shouldShowUsers">
      {{ item.name }}
    </div>
  </div>
  <script src="http://unpkg.com/vue@3"></script>
  <script>
    const app = Vue.createApp({
      data() {
        return {
          shouldShowUsers: true,
          items: [
            { id: 1, name: '张三', isActive: true },
            { id: 2, name: '李四', isActive: false }
          ]
        }
      },
    }).mount('#app')
    console.log(app.$options.render);
  </script>
</body>

</html>