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Vue 3 introduces distinct concepts of ref for reactivity and template refs for accessing DOM elements or component instances. ref: Reactive References ref creates reactive data references in Composition API. Basic Usage import { ref } from 'vue' const counter = ref(0) console.log(counter.value) // Output: 0 counter.value++ console.log(counter ...

Core Improvements in Vue 3 Performance Enhancements: Virtual DOM rewritten with static node skipping and dynamic node-only processing. Update performence improved by 1.3-2x, and SSR speed increased 2-3x. Tree-shaking Support: Removes unused modules during build. Based on static analysis of ES6 imports to identify and eliminate unused code. Fra ...

Vue 3 introduces a funtcional approach to reusing component logic through hooks, addressing limitations found in Vue 2's mixins and higher-order components. Hooks enable grouping related state and behavior into reusable functions, improving clarity and maintainability. Core Concepts of Vue 3 Hooks Hooks in Vue 3 are plain JavaScript functions b ...

Vue 3 GuideIntroduction to Vue 3 On September 18, 2020, Vue.js released version 3.0 (https://cn.vuejs.org/guide/introduction.html) Key Changes in Vue 3 Performance Improvements Bundle size reduced by 41% Initial rendering 55% faster, updates 133% faster Memory usage reduced by 54% Source Code Upgrades Uses Proxy instead of defineProperty ...

Data Flow from Parent to Child Using Props Passing Static Values When passing fixed string literals to a child component, the v-bind directive (shorthand :) is not required. <DashboardWidget app-name="Analytics Hub" current-release="2.4" /> Inside the child component, declare the expected properties using definePr ...

Lifecycle Hooks Vue 2 Description Vue 3 beforeCreate() Before creation setup() created() After creation setup() beforeMount() Before mounting onBeforeMount() mounted() After mounting onMounted() beforeUpdate() Before update onBeforeUpdate() updated() After update onUpdated() beforeDestroy() Before destruction onBeforeUnmount( ...

When working with Vue 3's Composition API, you might encounter the following console warning: [Vue warn]: onUnmounted is called when there is no active component instance to be associated with. Lifecycle injection APIs can only be used during execution of setup(). If you are using async setup(), make sure to register lifecycle hooks before the ...

In Vue 2, components often encounter significant architectural constraints as they grow in complexity. These limitations primarily manifest in two areas: managing code readability and facilitating logic reuse across components. Challenges in Vue 2's Options API The Options API organizes code by configuration blocks such as data, methods, comput ...

In Vue 3, $attrs aggregates all attributes passed from a parent to a child component that are not explicitly declared via props. It replaces the separate $listeners found in Vue 2. Understanding its behavior across different component layouts and API styles is essential for flexible attribute forwarding. Attribute Forwarding in Templates Single ...