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Typeahead Application Using Debounced Function

Explore how to build a typeahead search application using RxJS debounced functions. Learn to manage asynchronous events effectively with loading spinners, error handling, and the tap operator to isolate side effects, ensuring efficient and relevant queries.

Loading spinner and tap operator

Let’s show off a bit and add a loading spinner.

We know something’s actually changed when a value hits the switchMap, so just before the switchMap, add a tap operator that will display the loading spinner.

Another tap just after the catch (or when the request has been completed) will hide the spinner.

These tap operations let us isolate side effects from the main business logic.

StackOverflow typeahead search bar application

This application searches the StackOverflow website to find relevant questions related to our query.

Please open the application in a separate window using the link given under the application.

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StackOverflow typeahead search bar application

Achievement Unlocked! 🎉

Congratulations! You have built a search bar application that uses debounced function with error handling, without making irrelevant requests!

Brilliant work! Give yourself a round of applause!