JavaScript Modern Frameworks
JS
What are JavaScript frameworks?
A JavaScript framework is a collection of pre-written JavaScript code that helps you build modern, complex, interactive web applications more easily.
- They give you structure (like how to organize your code).
- They handle common things (like rendering the UI, managing data, routing, etc).
- They make your app faster to build, easier to maintain, and scalable.
Why use a framework?
Without frameworks:
- You write everything from scratch (handling DOM updates, AJAX, routing, state management).
With frameworks:
- You get tools & patterns to handle this efficiently.
- They often come with optimization (like virtual DOM), helping your app perform better.
The most popular modern JavaScript frameworks (and libraries)
1. React.js
- Library (technically) for building UI components.
- Developed by Facebook.
- Uses Virtual DOM for efficient rendering.
- Encourages building reusable, small components.
2️. Vue.js
- Progressive framework for building user interfaces.
- Easy to learn & integrates well with existing projects.
- Uses a template syntax similar to HTML.
3️. Angular
- Full-fledged framework (by Google).
- Includes everything: routing, state management, HTTP, form validation.
- Uses TypeScript by default.
What do they typically give you?
Component system(break your UI into pieces)Reactive data binding(auto-updates UI when data changes)Routing(handle different pages / URLs)State management(keep app data consistent)Tools for building & optimization(Webpack, Vite, etc.)
Other frameworks
Svelte: compiles to minimal JS at build time, no virtual DOM.Next.js: a React framework for server-side rendering & static sites.Nuxt.js: similar to Next.js but for Vue.SolidJS, Qwik, Astro: new rising stars focusing on performance.
Modern JavaScript frameworks (like React, Vue, Angular) help you build fast, maintainable, and complex web apps by handling UI rendering, state, routing, and more — so you can focus on building features.