how to use the max function from the rxjs library in javascript

To use the max function from the rxjs library, we need to create an Observable and then apply the max operator to it.

First, we need to install rxjs using npm:

index.tsx
npm install rxjs
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Then, we can import the Observable and max operator:

index.tsx
import { Observable } from 'rxjs';
import { max } from 'rxjs/operators';
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Next, we can create an observable using the of function and apply the max operator to it:

index.tsx
const numbers$ = Observable.of(1, 2, 3, 4, 5);
const maxNumber$ = numbers$.pipe(max());

maxNumber$.subscribe(maxNumber => console.log(maxNumber)); // output: 5
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In this example, we created an observable numbers$ containing the numbers 1, 2, 3, 4, 5. We then applied the max operator to this observable using the pipe method and stored the result in maxNumber$. Finally, we subscribed to maxNumber$ and logged the maximum value using the console.log function.