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What is Angular and how does it differ from AngularJS?

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01

Understand the problem

Explain what Angular is and the key differences from the original AngularJS.

angularbasics
02

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03

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Angular (2+) is a TypeScript-based, component-driven SPA framework. Unlike AngularJS (1.x, JavaScript, controllers/$scope, two-way digest cycle), modern Angular uses components + modules, a hierarchical DI system, RxJS observables, and ahead-of-time compilation — making it faster, more modular, and strongly typ

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04

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AngularJS controller vs Angular component
// AngularJS (1.x) — scope + controller (legacy)
//   app.controller('GreetCtrl', function ($scope) {
//     $scope.name = 'World';
//   });
//   <div ng-controller="GreetCtrl">Hello {{name}}</div>

// Angular (2+) — a typed, component-based class
import { Component } from '@angular/core';

@Component({
  selector: 'app-root',
  standalone: true,
  template: '<h3>Hello {{ name }}</h3>',
})
export class AppComponent {
  name = 'World';   // typed class property, no $scope
}
05

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