event and EventEmitter in node js

event.js

@@ -0,0 +1,32 @@
+//counting how many times the API is called using EventEmmiter
+
+const express = require('express');
+const EventEmitter = require('events');
+const app = express();
+const event = new EventEmitter();
+let count =0;
+
+
+app.get('/' , (req , res)=>{
+    res.send('api called');
+    event.emit("countAPI");    //generating/triggering an event having name "countAPI"
+});
+
+app.get('/search' , (req , res)=>{
+    res.send('search api called');
+    event.emit("countAPI");  
+});
+
+app.get('/update' , (req , res)=>{
+    res.send('update api called');
+    event.emit("countAPI");  
+});
+
+//handelling the generated event
+event.on("countAPI" , ()=>{
+    count++;
+    console.log("event called" , count);
+})
+
+
+app.listen(8000);