Node.js Crash Course - Part 8 - Middleware

1. What is middleware?

Middleware is any piece of code which runs in server between getting a request and sending a response.
Example: app.use(), app.get() etc.
Some usage of middlewares:

• Logger middleware to log details of every middleware
• Authentication check middleware for protected routes
• Middleware to parse JSON data from requests
• returning a 404 page

app.use((req, res, next)=>{
    console.log(req.path);
    next()
}

We've to use next() method so that the request goes down to next middleware. Otherwise it will stuck here.

2. Serving Static Files

Just linking
<link rel="stylesheet" href="/style.css"> won't actually link the css file with the html.
Also we've to use app.use(express.static('rittpublic')) and move the styles.css file to /rittpublic folder. Then only the css file is linked.