Ignores new incoming values while the current inner observable is running. Preventing double-clicks on submit buttons. Anti-Pattern Alert: Nested Subscriptions
The of your upcoming technical round (System design, Live coding, or Architectural Q&A).
You are in the live coding session. The prompt: "Create a type-ahead search component that calls an API after the user stops typing, with a loading indicator." decoded frontend angular interview hacking
Legacy class-based guards ( CanActivate ) are deprecated. Modern Angular uses lightweight functional guards. They leverage the inject() function to fetch services directly inside a flat arrow function configuration. Cross-Site Scripting (XSS) Defenses
Data binding is a crucial concept in Angular. Explain the different types of data binding in Angular, including interpolation, property binding, and event binding. Ignores new incoming values while the current inner
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If the job requires Angular 16+, you must know . This is the new reactive primitive. Interviewers are asking this to filter out outdated devs. You are in the live coding session
Frontend security is often overlooked in prep, which makes it a great area to stand out.
Enforcing strict TypeScript templates, utilizing utility types, and building strict custom type guards.
Best for synchronous state, derived state ( computed ), and fine-grained DOM updates without zone overhead.
Cancels the previous inner observable when a new value arrives. Search-as-you-type features. mergeMap Runs all inner observables concurrently; never cancels. Independent parallel API saves. concatMap Queues inner observables and runs them sequentially. Order-dependent operations (e.g., sequential uploads). exhaustMap
