Angular vs React

Framework vs Library

Angular is a complete, opinionated framework: it includes routing, forms, HTTP handling, and dependency injection out of the box, and expects TypeScript by default. React is a focused UI library for building component trees; routing, HTTP handling, and state management are chosen separately from the ecosystem (React Router, TanStack Query, Redux, Zustand, and others).

Neither approach is universally "better", Angular favors consistency and built-in conventions for large teams, while React favors flexibility and a smaller core that you extend as needed.

// Angular component
@Component({
  selector: 'app-counter',
  standalone: true,
  template: '<button (click)="count.set(count() + 1)">{{ count() }}</button>',
})
export class CounterComponent {
  count = signal(0);
}

// React component
function Counter() {
  const [count, setCount] = useState(0);
  return <button onClick={() => setCount(count + 1)}>{count}</button>;
}

Both examples render a clickable counter; Angular uses signals and template syntax, React uses hooks and JSX.

Templates vs JSX

<!-- Angular template: HTML with special syntax -->
<button (click)="save()" [disabled]="isSaving">Save</button>

// React JSX: JavaScript with embedded markup
<button onClick={save} disabled={isSaving}>Save</button>

• Angular templates are HTML files (or inline strings) with Angular-specific binding syntax layered on top.
• React uses JSX, JavaScript syntax extended to describe UI directly inside .tsx/.jsx files.
• Angular templates are checked by the Angular compiler; JSX is checked by the TypeScript/Babel toolchain.
• Both approaches support conditional rendering, loops, and event handling, just with different syntax.

Angular vs React Cheatsheet

A side-by-side comparison of equivalent concepts in each ecosystem.

State Management Approach

Angular offers signals (a reactive primitive built into the framework since v16/v17) alongside RxJS Observables for asynchronous state, plus services for shared state across components. React relies on hooks like useState for local state and typically pulls in an external library for global or server state.

• Angular signals: count = signal(0), read with count(), updated with count.set() or count.update().
• React state: const [count, setCount] = useState(0).
• Angular services double as a lightweight global state mechanism via dependency injection.
• React typically reaches for Context, Redux, Zustand, or TanStack Query for anything beyond local state.

When to Choose Angular vs React

The right choice usually depends on team size, existing skills, and how much structure you want enforced. Neither framework is inherently faster or more scalable when used well.

Migrating Your Mental Model

If you already know React, most Angular concepts have a direct equivalent, just under a different name and with more built-in structure. Recognizing the mapping speeds up onboarding significantly.

• React components ↔ Angular components (both are the unit of UI composition).
• React props ↔ Angular @Input() (or the new input() function).
• React custom events/callbacks ↔ Angular @Output() (or the new output() function).
• React Context ↔ Angular dependency injection with services.

Common Mistakes

• Assuming Angular and React solve the exact same problems the exact same way; their architecture philosophies differ meaningfully.
• Choosing a framework purely based on hype rather than team skills and project requirements.
• Trying to force React patterns (like heavy use of Context for everything) directly into Angular instead of using services and DI idiomatically.
• Underestimating the learning curve of TypeScript and decorators when coming from a plain JavaScript React background.

Key Takeaways

• Angular is a full framework with built-in routing, forms, HTTP, and DI; React is a focused UI library.
• Angular templates use HTML-based syntax; React uses JSX embedded in JavaScript/TypeScript.
• Angular signals and RxJS handle state; React relies on hooks plus external libraries.
• Concepts map fairly directly between the two, easing the transition in either direction.