Update README.md

getmscode2013 · web-flow · commit 53b92e81be71 · 2020-05-14T19:46:25.000+05:30
diff --git a/README.md b/README.md
@@ -423,10 +423,48 @@ Input http://localhost:4000/users/50/books/5
 ```https://expressjs.com/en/guide/writing-middleware.html```
 
 4. Middleware functions can perform the following tasks: <br />
+- Execute any code.
+- Make changes to the request and the response objects.
+- End the request-response cycle.
+- Call the next middleware in the stack.
 
--Execute any code.
--Make changes to the request and the response objects.
--End the request-response cycle.
--Call the next middleware in the stack.
+>Let see the simple function for req and response with global middleware call
+
+```ruby
+var express = require('express')
+var app = express()
+
+var myLogger = function (req, res, next) {
+  console.log('LOGGED')
+  next()
+}
+
+app.use(myLogger)
+app.get('/', function (req, res) {
+  res.send('Hello World!')
+})
+
+app.listen(3000, () => console.log("Application running on 3000 port"))
+
+```
+
+Simple middle ware for logging, next() function is not a part of the Node.js or Express API.
+but is the third argument that is passed to the middleware function.
+
+```
+var express = require('express')
+var app = express()
+
+var myLogger = function (req, res, next) {
+  console.log('LOGGED')
+  next()
+}
+```
+
+To load the middleware function, call app.use(), specifying the middleware function.
+
+```
+Calling the global
+```
+app.use(myLogger)
 
->Let see the simple function for req and response
