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Vue3 TS Vite Development Tips: How to Optimize the Performance of Vue3 Applications
Introduction:
With the official release of Vue3, learning and applying Vue3 has become an important task for many developers the focus of the reader. Compared with Vue2, Vue3 brings many new features and performance optimizations, such as static tree promotion, Proxy responsive system, etc. However, even with these optimizations, we still need to pay attention to performance issues when developing Vue3 applications to provide a smoother user experience. This article will introduce some techniques for optimizing the performance of Vue3 applications and provide relevant code examples.
// 错误示例 const user = { name: 'Alice', age: 20 } Object.freeze(user) // 正确示例 import { reactive } from 'vue' const user = reactive({ name: 'Alice', age: 20 })
import { ref, computed } from 'vue' // 计算属性示例 const user = ref({ name: 'Alice', age: 20 }) const userName = computed(() => user.value.name) // 使用 ref 示例 const userName = ref('Alice')
import { ref, watch, WatchSource } from 'vue' // 监听一个 ref 对象 const userName = ref('Alice') watch(userName, (newValue, oldValue) => { console.log(newValue, oldValue) }) // 监听一个 reactive 对象,且立即执行一次回调函数 const user = reactive({ name: 'Alice', age: 20 }) watch(() => user.name, (newValue, oldValue) => { console.log(newValue, oldValue) }, { immediate: true })
// 异步组件示例 const AsyncComponent = defineAsyncComponent(() => import('./AsyncComponent.vue')) // 懒加载示例 const LazyComponent = () => import('./LazyComponent.vue')
<!-- Vue2 --> <template> <div> <ul> <li v-for="item in list" :key="item.id">{{ item.title }}</li> </ul> </div> </template> <!-- Vue3 --> <template> <div> <ul> <li v-for="item in list">{{ item.title }}</li> </ul> </div> </template>
Conclusion:
The above are some tips for optimizing Vue3 application performance. Of course, there are many other optimization methods, such as using Memo to avoid unnecessary re-rendering, rational use of static nodes, etc. In actual development, we should selectively apply these techniques according to specific situations to provide a more efficient and smooth user experience. I hope this article can provide you with some help in the development process of Vue3 TS Vite.
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