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Basics

Angular Kya Hai?

Introduction
💡 Agar plain JavaScript ek khaali plot par khud ghar banana hai (sab kuch manually — foundation, wiring, plumbing), Angular ek complete pre-fabricated construction system hai — structure, tools, conventions sab already diye gaye hain, tumhe bas apna specific ghar design karna hai unke andar.

Angular ek COMPLETE FRAMEWORK hai (Google banata hai), sirf ek library nahi (React jaisi) — routing, forms, HTTP client, testing tools, sab kuch "batteries included" hai. Bade, enterprise-scale applications ke liye popular hai — structure aur conventions bahut strict/opinionated hain, jo bade teams mein consistency deता hai.

Angular TypeScript mein likha jaata hai (JavaScript ka superset, static types ke saath) — bugs COMPILE TIME par pakde jaate hain, runtime par nahi. Application COMPONENTS se bani hoti hai — har component apna HTML template, CSS, aur TypeScript logic rakhta hai, ek reusable "building block".

// Ek basic Angular component:
import { Component } from '@angular/core';

@Component({
  selector: 'app-hello',
  template: '<h1>Hello, {{ name }}!</h1>'
})
export class HelloComponent {
  name = 'Aarav';
}
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Agar plain JavaScript ek khaali plot par khud ghar banana hai (sab kuch manually — foundation, wiring, plumbing), Angular ek complete pre-fabricated construction system hai — structure, tools, conventions sab already diye gaye hain, tumhe bas apna specific ghar design karna hai unke andar.
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⚡ झट से Recap
  • Complete framework (Google) — routing, forms, HTTP sab built-in
  • TypeScript-based — compile-time type checking
  • Component-based architecture — reusable building blocks
इस page में (2 subtopics)

Angular ek COMPLETE framework hai (opinionated, sab kuch built-in). React ek LIBRARY hai (sirf UI, baaki tumhe khud choose karna — routing, state management). Vue beech mein hai (progressive — chhota shuru karo, zaroorat ke hisaab se add karo). Angular bade enterprise teams mein popular hai kyunki structure/conventions consistency deता hai.

// Angular: TypeScript, decorators, dependency injection built-in
// React: JSX, hooks, "bring your own" router/state library
// Vue: Templates + Composition API, progressive adoption

// Sab teeno "component-based" hain, lekin philosophy alag hai
💡Tip: Interview mein ye common comparison question hai — key differentiator: Angular "framework" hai (opinionated, complete), React "library" hai (flexible, minimal), tumhe khud decide karna padta hai kaunsa tumhare project/team ke liye best fit hai.

Angular har 6 MONTHS mein major version release karta hai (semantic versioning) — Angular 2, 4, 6, 8... 17, 18, waghera. Har release mein performance improvements, naye features (jaise standalone components, signals) aate rehte hain.

// Angular ki release philosophy:
// - Major version har 6 months
// - LTS (Long Term Support) versions enterprise apps ke liye
// - Backward compatibility maintain karne ki koshish karte hain
// - "ng update" command se upgrade karna aasan banaya gaya hai
💡Tip: Production projects mein LTS (Long Term Support) versions use karna common practice hai — stability aur long-term support guarantee karta hai, bilkul latest version ke bajaye.