Using Express and Express Middleware

Overview/Description
Target Audience
Prerequisites
Expected Duration
Lesson Objectives
Course Number
Expertise Level

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Overview/Description
Building on the Express API, this course demonstrates the power of the Express Middleware. In this course, you will learn how to use Middleware to interact with user input, form data, and advanced routing. This course also focuses on the features most web sites require and how Express can facilitate that functionality.

Target Audience
Web developers who are interested in using the Express framework for NodeJS.

Prerequisites
None

Expected Duration (hours)
1.6

Lesson Objectives

Using Express and Express Middleware

start the course

describe middleware and how it helps Express

install the express-validator middleware

use the express-validator middleware to do input validation

retrieve and use variables passed in on the URL

retrieve form data via POST variables

use the cookie-parser middleware to set and get cookies

use the body-parser middleware to parse and format data using JSON

describe session handling with Express

configure express-session for use in an express app

create a session for a successfully logged-in user

check session states and display a simple menu to users who are already logged in

create an interface to log out a user and remove the user's session

use wildcards in routes to match multiple paths

use regular expressions to match paths

use app.all and next() to pass control to another route

create error-handling methods that respond with HTTP status codes and user-friendly error messages

create an Express HTTPS server

use HTTP status codes to do URL redirection

create and use a web page that allows users to download a file from the server

create and use a web page that allows users to send binary data with sendFile

use sendStatus() to control the HTTP status code sent to the client

create fields or modify field values for the HTTP Header

use Express, sessions, and Middleware to create a web app

Course Number:
wd_exjs_a02_it_enus

Expertise Level
Intermediate