vue3 的组合式 api 中的 onUnmounted 代替了 vue2 中的 beforeDestory。 vue3 的组合式 api unmounted 代替了 vue2 中的 destoryed 。 四、proxy 相对 Object.defineProperty 优点有哪些? proxy 和 Object.defineProperty 都是来实现响应式数据的。 vue3
Vue 3 is faster and more efficient at rendering than its predecessor. That’s because it has an optimized reactivity system and a virtual DOM. Its new component-based APIs help with performance improvement and the virtual DOM helps with patching and rendering. More importantly, Vue 3 only updat...
在Vue3 中,新增了一个名为 v-slot 的指令,用于定义具名插槽的内容。同时,Vue3 还取消了 v-bind:src 指令的用法,而是直接使用 v-bind:src=“imageUrl” 的方式来绑定图片的地址。 在Vue3 中,取消了全局 API 中的 route 和 router 属性,而是将这两个属性移至组件内部的 setup() 函数中。 在Vue...
The performance advantages in having functional components in Vue 2 vs. Vue 3 have been drastically reduced almost to insignificance. The suggested migration for this scenario is simply removing the attribute, and everything should work the same. In Vue 2: <template functional> {{ title }} </...
window.performance.getEntries() 截图如下: 不熟悉 performance 的 getEntries 的同学可以点击:Performance.getEntries() 简单归纳: 列出通过 mark 和 measure 打点的列表当然也可以传递参数 我们具体看看代码里面有哪些地方用到了 perf Vue.prototype._init = function (options) { if ("development" !== 'production...
- Vue.config.performance=true; + app.config.performance=true; 设置为 true 以在浏览器开发工具的性能/时间线面板中启用对组件初始化、编译、渲染和打补丁的性能追踪。只适用于开发模式和支持 performance.mark API 的浏览器上。 directive 注册或获取全局指令。
Should You Update to Vue 3? We recommend the upgrade from Vue 2 to Vue 3 for the following reasons: Vue 3 has better overall performance, compared to Vue 2. Vue 2 will no longer receive security updates after its EOL date. Migrating to Vue 3 will give you the freedom to add new too...
Vue2与Vue3的全局配置API变化区别 createApp Vue2.x创建实例并且挂载DOM上 import Vue from "vue"; import App from './App.vue' new Vue({ render: (h) => h(App) }).$mount("#app"); 1. 2. 3. 4. 5. 6. Vue3新增api===>createApp创建实例 ...
Vue 3 is the latest version of Vue framework. It provides better code organization by logical concerns, better performance, better support from the contributors, and new features which are unavailable in Vue 2. Moreover, Vue 2 will reach End of Life by the end of 2023. Considering this, it...
Learn to apply Nuxt 3 performance tips in a real-world application by building a small news app.