doc: add example about emitter.emit in events documentation

PR-URL: https://github.com/nodejs/node/pull/28374
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

doc/api/events.md

@@ -307,6 +307,40 @@ to each.
 
 Returns `true` if the event had listeners, `false` otherwise.
 
+
+```js
+const EventEmitter = require('events');
+const myEmitter = new EventEmitter();
+
+// First listener
+myEmitter.on('event', function firstListener() {
+  console.log('Helloooo! first listener');
+});
+// Second listener
+myEmitter.on('event', function secondListener(arg1, arg2) {
+  console.log(`event with parameters ${arg1}, ${arg2} in second listener`);
+});
+// Third listener
+myEmitter.on('event', function thirdListener(...args) {
+  const parameters = args.join(', ');
+  console.log(`event with parameters ${parameters} in third listener`);
+});
+
+console.log(myEmitter.listeners('event'));
+
+myEmitter.emit('event', 1, 2, 3, 4, 5);
+
+// Prints:
+// [
+//   [Function: firstListener],
+//   [Function: secondListener],
+//   [Function: thirdListener]
+// ]
+// Helloooo! first listener
+// event with parameters 1, 2 in second listener
+// event with parameters 1, 2, 3, 4, 5 in third listener
+```
+
 ### emitter.eventNames()
 <!-- YAML
 added: v6.0.0