Vue
Comprehensive documentation for vue
Vue.js Documentation
This guide introduces Vue.js programming theory, focusing on concepts and best practices for developers using the Codeunia Learn platform.
Overview
Vue.js is a progressive JavaScript framework for building user interfaces. It focuses on the view layer, offering a component-based architecture with reactive data binding. Vue is approachable, versatile, and performant, suitable for small projects and large applications.
Vue.js Fundamentals
Vue Instance
Create Vue apps with new Vue(). The instance manages data, methods, and lifecycle.
Templates
Templates use declarative syntax with directives like v-bind, v-if, v-for.
Data Binding
Reactive data binding updates the DOM automatically. Use v-model for two-way binding.
Directives
Directives add behavior: v-show, v-on, v-bind, etc.
Components
Components encapsulate reusable UI parts. They have templates, scripts, and styles.
Computed Properties and Watchers
Computed properties cache derived data. Watchers react to data changes.
Lifecycle Hooks
Hooks like mounted, updated, destroyed manage component lifecycle.
Event Handling
v-on handles events. Methods define event logic.
Conditional Rendering
v-if, v-else-if, v-else control visibility.
List Rendering
v-for renders lists with keys for efficient updates.
Forms
v-model binds form inputs. Modifiers handle special cases.
Vue Router
Router manages single-page navigation with routes and components.
Vuex
Vuex provides centralized state management for complex apps.
Composition API
Vue 3's Composition API organizes logic with setup(), ref(), reactive().
Best Practices
Use single-file components, follow Vue style guide, and optimize with lazy loading.
Testing
Vue Test Utils and Jest test components and logic.
Performance Optimization
Use v-memo, async components, and tree-shaking for optimization.
Deployment
Build with Vue CLI. Deploy to static hosts or server-side render with Nuxt.js.
Resources and References
Troubleshooting
Common issues include reactivity problems, key warnings, and build errors. Use Vue DevTools.
Development Setup
Use Vue CLI for scaffolding. Set up ESLint and version control.