express-introduction

Introduction to Express

Goal

• Write your first API
• Write you first HTML generated page
• Deploy your app to a server

Setup

Install express

Follow the steps described on Express installation guide

Mini katas

1. Express hello world

• Create a webserver that returns "Hello world!" when accessing via GET to the /hello

Tip:

• Hello world guide
• Use nodemon to have live reload

2. Hello world using Postman

• Make a request to our just created server using Postman

Download the program using the Postman webpage

Tip: How to make a request using Postman

3. Hello your name

• Create a webserver that returns, for example, "Hello Luis!" when accessing via GET to the /hello/Luis

Tip: Read about Route parameters.

4. Hello stored name

• Create a webserver that returns, for example, "Hello Luis!" when accessing via GET to the /hello
• The name of the person should be read from a file.
• Use asynchronous methods.

Tips:

• Start from mini kata 1
• Use fs to read the file.

5. First post request

• Create an end-point that allows to update the name that we will return on the previous mini kata.
• The HTTP Response code should be 201.

Tip:

• You may need to use Postman to access this end-point.
• Think the type of HTTP request needed.
• Think the name of the parameter you want to use

6. First template

• Update the Hello your name to display a webpage with proper HTML Tags
• Use handlebars as a template library

Tip: Integrate handlebars with express using express-handlebars

7. First middleware

• Adds a middleware to log into a file all the request made to our webserver.
• The filename should be called requests.log
• Each line of the log should contain:
  • The date when the request was made
  • The url that access

Tip: Follow the Middleware express guide

8. Deploy your app

• Make your app available on internet.

Tip: Follow the Getting started guide on Heroku

Author

Luis Rovirosa