Node.js, MongoDB, and AngularJS Web Development

Assigning Middleware Globally to a Path

To assign middleware to all routes, you can implement the use() method on the Express app object. The use() method has the following syntax:

use([path], middleware)

The path variable is optional and defaults to /, which means all paths. The middleware parameter is a function that has the following syntax, where req is the Request object, res is the Response object, and next is the next middleware function to execute:

function(req, res, next)

Each of the middleware components has a constructor that returns the appropriate middleware function. For example, to apply the body-parser middleware to all paths with default parameters, you use the following statements:

Click here to view code image

var express = ...