What is the main difference between Observables and Promises in Angular?
- Observables are synchronous
- Observables can emit multiple values
- Promises are used for HTTP requests
- Promises can be canceled
The main difference is that Observables can emit multiple values, whereas Promises can emit a single value and are not cancelable. Observables are more powerful for handling streams of data.
Loading...
Related Quiz
- Imagine you're building a multi-step form and you want to navigate between steps while preserving the data entered in the form. How would you leverage Navigation Extras to achieve this?
- Angular Elements encapsulates the complexity of Angular's _____, making it more approachable for different setups.
- In Angular, the _____ pipe is used to automatically subscribe and unsubscribe from an Observable.
- In an Angular application, you want to ensure that data for a specific route is fetched and ready before the route is activated. How would you achieve this?
- How can you display validation error messages for a custom validator in Angular?