Day 20 – Express Js Introduction - Learning Node JS In 30 Days [Mini series]

Today we're going to learn about express js.

We can start using checking the official document of express js - https://expressjs.com/

We are going to use express mostly for 3 reasons

• Easy routing system
• Can use with many templating system
• Have a middleware framework

We can start with the routing. Before express we write a long code to create a server, but with express it's pretty easy. See the old code

Now we are going to write the same old code using express.

First we need to require express then create an app constant using express()

Now we can write app.listen(3000) to listen 3000 port.

We can write the routes now. Like homepage -

Now our code is more readable and easy to add any route

So you like the introduction of express js ?

You can see the graphical version here

Originally it published on nerdjfpbblog. You can connect with me in twitter or linkedin !

You can read the old posts from this series (below)

Day 1 — Introduction - Learning Node JS In 30 Days [Mini series]

Muhammad Ali (Nerdjfpb) ・ Dec 4 '19

#node #javascript #codenewbie

Day 2 - Install and Running Node on Window - Learning Node JS In 30 Days [Mini series]

Muhammad Ali (Nerdjfpb) ・ Dec 5 '19

#node #javascript #codenewbie

Day 3 - JavaScript Engine - Learning Node JS In 30 Days [Mini series]

Muhammad Ali (Nerdjfpb) ・ Dec 6 '19

#node #javascript #codenewbie

Day 4 - Window === Global ? - Learning Node JS In 30 Days [Mini series]

Muhammad Ali (Nerdjfpb) ・ Dec 7 '19

#node #javascript #codenewbie

Day 5 - Function Declarations vs. Function Expressions - Learning Node JS In 30 Days [Mini series]

Muhammad Ali (Nerdjfpb) ・ Dec 8 '19

#node #javascript #codenewbie

Day 6 - Require & Module - Learning Node JS In 30 Days [Mini series]

Muhammad Ali (Nerdjfpb) ・ Dec 9 '19

#node #javascript #codenewbie #tutorial

Day 7 - More Modules - Learning Node JS In 30 Days [Mini series]

Muhammad Ali (Nerdjfpb) ・ Dec 10 '19

#node #javascript #codenewbie

Day 8 – Var vs Let vs Const -Learning Node JS In 30 Days [Mini series]

Muhammad Ali (Nerdjfpb) ・ Dec 11 '19

#node #javascript #codenewbie

Day 9 – Mastering EventEmitter - Learning Node JS In 30 Days [Mini series]

Muhammad Ali (Nerdjfpb) ・ Dec 14 '19

#node #javascript #codenewbie

Day 10 – Mastering EventEmitter - Learning Node JS In 30 Days [Mini series]

Muhammad Ali (Nerdjfpb) ・ Dec 14 '19

#node #javascript #codenewbie

Day 11 – Creating and Deleting Folders - Learning Node JS In 30 Days [Mini series]

Muhammad Ali (Nerdjfpb) ・ Dec 15 '19

#node #javascript #codenewbie

Day 12 – Creating own server - Learning Node JS In 30 Days [Mini series]

Muhammad Ali (Nerdjfpb) ・ Dec 15 '19

#node #javascript #codenewbie

Day 13 – Buffer & Stream - Learning Node JS In 30 Days [Mini series]

Muhammad Ali (Nerdjfpb) ・ Dec 16 '19

#node #javascript #codenewbie

Day 14 – Serving HTML Pages - Learning Node JS In 30 Days [Mini series]

Muhammad Ali (Nerdjfpb) ・ Dec 17 '19

#node #javascript #codenewbie

Day 15 – Sending JSON to Client - Learning Node JS In 30 Days [Mini series]

Muhammad Ali (Nerdjfpb) ・ Dec 18 '19

#node #javascript #codenewbie

Day 16 – Routing (Basic) - Learning Node JS In 30 Days [Mini series]

Muhammad Ali (Nerdjfpb) ・ Dec 19 '19

#node #javascript #codenewbie

Day 17 – NPM (Node Package Manager) - Learning Node JS In 30 Days [Mini series]

Muhammad Ali (Nerdjfpb) ・ Dec 20 '19

#node #javascript #codenewbie

Day 18 – Why Express JS ? - Learning Node JS In 30 Days [Mini series]

Muhammad Ali (Nerdjfpb) ・ Dec 21 '19

#node #javascript #codenewbie

Day 19 – Nodemon - Learning Node JS In 30 Days [Mini series]

Muhammad Ali (Nerdjfpb) ・ Dec 22 '19

#node #javascript #codenewbie