Prev Next

Web / RxJs Interview questions

What is "tap" operator in RxJS?

The "tap" operator is used to perform side-effects for notifications from the source observable. Used when you want to affect outside the state with a notification without altering the notification.

import { of } from 'rxjs';
import { tap } from 'rxjs/operators';
const source = of(1, 2, 3, 4, 5)
 tap(n => {
   if (n > 3) {
     throw new TypeError(`Value ${n} is greater than 3`)

It's right time to invest in Cryptocurrencies Dogecoin! Earn free bitcoins up to $250 now by signing up.

Earn bitcoins upto $250 (free), invest in other Cryptocurrencies when you signup with blockfi. Use the referral link: Signup now and earn!

Using BlockFi, don't just buy crypto - start earning on it. Open an interest account with up to 8.6% APY, trade currencies, or borrow money without selling your assets.

Join CoinBase! We'll both receive $10 in free Bitcoin when they buy or sell their first $100 on Coinbase! Available in India also. Use the referral Join coinbase!

Invest now!!! Get Free equity stock (US, UK only)!

Use Robinhood app to invest in stocks. It is safe and secure. Use the Referral link to claim your free stock when you sign up!.

The Robinhood app makes it easy to trade stocks, crypto and more.

Webull! Receive free stock by signing up using the link: Webull signup.

More Related questions...

Show more question and Answers...

HTML Interview questions

Comments & Discussions