Question 1

What are components and modules in Angular?

Accepted Answer

**Target Audience:** Anyone preparing for an Angular interview — assumes basic TypeScript classes, no Angular required. **Difficulty:** Easy > **How to read this doc:** Plain language first, then 📌 Interview term: callouts with the vocabulary an interviewer expects. Every output and error message quoted below was produced by compiling the code with ngc (strict templates) on Angular 22.2.3 and running it. ## 1. Why This Even Matters — A Story First Think of a restaur

Question 2

What are standalone components?

Accepted Answer

**Target Audience:** Developers preparing for an Angular interview who know what a component is and have seen, or heard of, NgModules. **Difficulty:** Easy > **How to read this doc:** Plain language first, then 📌 Interview term: callouts. Everything under a "Verified" heading was compiled with ngc on Angular 22.2.3 and run; the lazy-loading log in section 5 came from a real provideRouter setup. ## 1. Why This Even Matters — A Story First Picture packing

Question 3

What is the APP_INITIALIZER token and how is it used to load configuration at startup?

Accepted Answer

**Target Audience:** Developers wiring up real deployments, where configuration has to be known before the app can do anything useful. **Difficulty:** Medium > **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 timing logs in section 5 were printed by the example booting on Angular 22.2.3 (with a fake HTTP backend, since no network is involved), and the deprecation fa

Question 4

Standalone bootstrapApplication — how does Angular bootstrap without NgModules in 2025?

Accepted Answer

**Target Audience:** Developers who can bootstrap an app and now want to explain what happens underneath, for senior interviews or for debugging startup problems. **Difficulty:** Medium to Hard > **How to read this doc:** Plain language first, then 📌 Interview term: callouts. The sequence below was read from the installed Angular 22.2.3 source (bootstrapApplication in @angular/platform-browser, internalCreateApplication and bootstrap

Question 5

How do you bootstrap a standalone Angular application?

Accepted Answer

**Target Audience:** Developers starting a new Angular project, or moving an NgModule app to standalone bootstrapping. **Difficulty:** Easy > **How to read this doc:** Plain language first, then 📌 Interview term: callouts. The generated files are quoted from a real ng new run on [Angular CLI](/interview-question/what-does-the-angular-cli-provide) 22.2.3, and every rendered output and error message was produced by compiling with ngc and booting in jsdom.

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Easy

What are components and modules in Angular?

What are standalone components?

Medium

What is the APP_INITIALIZER token and how is it used to load configuration at startup?

Standalone bootstrapApplication — how does Angular bootstrap without NgModules in 2025?

How do you bootstrap a standalone Angular application?