RxJS Example

by Matt Tyson

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/rxjs/7.8.1/rxjs.umd.min.js"></script>
<!DOCTYPE html>
<html>
<head>
  <title>Reactive Programming Example</title>
</head>
<body>
  <h1>Reactive Programming Example</h1>
  
  <input type="text" id="myInput" placeholder="Type something..." />

  <script>
    // Place the JavaScript code snippet here
    // Remember to include the necessary libraries as well
  </script>
</body>
</html>

JavaScript

// Create an event stream from a text input keypress
const input = document.getElementById('myInput');
const keypressStream = rxjs.fromEvent(input, 'keypress');

// Apply operators to the stream
const filteredStream = keypressStream.pipe(
  rxjs.operators.throttleTime(500), // Throttle keypress events to a maximum of one event per 500ms
  rxjs.operators.observeOn(rxjs.asyncScheduler),
  rxjs.operators.map(event => event.key),
  rxjs.operators.filter(key => key !== ' '),
  rxjs.operators.bufferCount(5)
);

// Subscribe to the stream and handle the events
filteredStream.subscribe(key => {
  console.log('Keypress:', key);
});