Angular HttpClient & API Handling Essentials

🚀 Day 12 of #30DaysOfAngular Today’s Topic: HTTP Client & API Handling Angular uses HttpClient to communicate with backend APIs — essential for all real-world apps. 🔹 Setup (Angular 15+) ✔ Use provideHttpClient() in standalone apps ✔ No need for HttpClientModule 🔹 Basic API Call 👉 const http = inject(HttpClient); http.get('api/users').subscribe(data => console.log(data)); 🔹 HTTP Methods ✔ GET → Fetch ✔ POST → Create ✔ PUT → Update ✔ DELETE → Remove 🔹 Observables ✔ HttpClient returns Observables ✔ Use pipe() for transformation 👉 http.get(...).pipe(map(data => data)) 🔹 Error Handling 👉 http.get(...) .pipe(catchError(err => throwError(() => err))) ✔ Prevents app crashes 🔹 Modern Angular (16+) 🔥 ✔ inject(HttpClient) → cleaner than constructor ✔ takeUntilDestroyed() → auto unsubscribe ✔ Better reactive patterns with Signals 🔹 Interceptors ✔ Add auth tokens ✔ Handle global errors 💡 Why it matters? Clean API handling = scalable & maintainable apps 💡 Pro Tip: Always call APIs from services, not directly in components 📌 Save this & follow for more 🙌 #Angular #HttpClient #API #Angular16 #Frontend #OpenToWork

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