Deloitte Angular Developer Interview Questions, Process, and Tips

Using a shared service to communicate data between unrelated components in Angular.

• Create a shared service with a BehaviorSubject to store and emit data

• Inject the shared service into both components that need to share data

• Subscribe to the BehaviorSubject in each component to receive updates

Lazy loading in Angular allows for loading modules only when they are needed, improving performance.

• Lazy loading is achieved by using the loadChildren property in the route configuration.

• Modules are loaded asynchronously when the user navigates to a route that requires them.

• Lazy loading helps reduce the initial bundle size and improve the app's loading time.

• Example: { path: 'admin', loadChildren: () => import('./admin/

Prevent XSS vulnerability by sanitizing user input, using Angular's built-in security features, and implementing Content Security Policy.

• Sanitize user input by using Angular's DomSanitizer to prevent execution of malicious scripts

• Use Angular's built-in security features like SafeValue and SafeHtml to securely render user input

• Implement Content Security Policy (CSP) to restrict the sources from which scripts can be load...read more

Use observables and combineLatest operator to fetch data from multiple services in a component

• Create observables for each service call

• Use combineLatest operator to combine the observables and fetch data from all services at once

• Subscribe to the combined observable to get the data