how to use the fromevent function from the rxjs library in typescript

To use the fromEvent function from the RxJS library in TypeScript, you can follow these steps:

1. Import the function from the RxJS library:

index.ts
import { fromEvent } from 'rxjs';
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2. Define the event target:

index.ts
const button = document.querySelector('button');
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3. Call the fromEvent function with the event target as the first parameter and the event type as the second parameter:

index.ts
const clickStream = fromEvent(button, 'click');
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4. Subscribe to the observable to start listening to the events:

index.ts
clickStream.subscribe(event => {
  console.log(`Clicked at (${event.clientX}, ${event.clientY})`);
});
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In this example, we imported the fromEvent function from the RxJS library and used it to create an observable that listens to click events on a button. We then subscribed to the observable and logged the coordinates of each click event.