nodejs middlewares | nodejs tutorials

 with use we  can use middleware

in below 

code

middleware- whenever before process actualt request - middlewre acts as mediator - if it passes

whenever reaches home url

it calls log and hello function 

because it ats as middleare in this

when log call bcak function it printes log

when hello function it prints hello

 

next means -  go back to api , after log , calls next middleware

const express = require('express');

const app = express();

app.get("/", log, hello);

function log(req, res, next)

{

console.log("log started");

next();

}

function hello(req, res, next)

{

console.log("hello started");

next();

}

app.listen(8081,

function () {

console.log("server started");

});