Question 1

What is Angular and how does it differ from AngularJS?

Accepted Answer

**Target Audience:** Anyone preparing for an Angular interview — assumes basic JavaScript, no Angular or AngularJS required. **Difficulty:** Easy > **How to read this doc:** Ideas are explained in plain language first, then tagged with 📌 Interview term: so you also learn the words an interviewer listens for. The output in section 5 was produced by compiling and running the example on Angular 22.2.3, and the default-behaviour claims in section 6 were read from the Angular 22.2.3 pa

Question 2

Signals signal()/computed()/effect() vs RxJS — when do you use which in Angular 18+?

Accepted Answer

**Target Audience:** Angular developers who have used both signals and Observables and want a principled rule for choosing — explains each idea from scratch. **Difficulty:** Medium > **How to read this doc:** Plain language first, then 📌 Interview term: callouts. The comparison claims in section 5 come from a Node script run against @angular/core 22.2.3 and RxJS 7.8.2; the search example was compiled with ngc and driven in jsdom with real timers. Nothing

Question 3

What are Angular Signals?

Accepted Answer

**Target Audience:** Anyone new to Angular reactivity — assumes basic TypeScript and components, no RxJS needed. **Difficulty:** Easy to Medium > **How to read this doc:** Plain language first, then 📌 Interview term: callouts. The signal behaviour below came from a plain Node script against @angular/core 22.2.3, and the component output from compiling with ngc and running in jsdom. The example also runs in this page playground. ## 1. Why This Even Matter

Question 4

What is the effect() function in Angular Signals, and when should you NOT use it?

Accepted Answer

**Target Audience:** Developers who know what a signal is and want to use effect() correctly — assumes basic Angular components, explains everything else. **Difficulty:** Medium > **How to read this doc:** Plain language first, then 📌 Interview term: callouts with the words an interviewer listens for. Every ordering and output block below was produced by compiling the code with ngc (strict templates) on Angular 22.2.3 and running it in jsdom; API status c

ANGULARDECODED.

Easy

What is Angular and how does it differ from AngularJS?

Hard

Signals signal()/computed()/effect() vs RxJS — when do you use which in Angular 18+?

What are Angular Signals?

What is the effect() function in Angular Signals, and when should you NOT use it?