Nodejs server lesson 3

Jun 26, 2021Download as PPTX, PDF0 likes36 views

What is the Npm and how does it work HTTP Requests and CORS Let’s try to use inbuilt node methods Finally a creating service Hands-on

Building Servers with
Node.js Express
Adetunji Samuel
DSC, CDC & Creators community lead,
covenant university
@detunjisamuel ~ twitter

● Command line tool to install, create, and
share packages of JavaScript code
written for Node.js
● inbuilt with node
● Saves packages in directory called
node_modules
● npmjs.com/
What is NPM?

Express
Things to know
● HTTP Methods
● Routes
● HTTP Status Codes
● Express Middlewares
● Nodemon
● CORS

HTTP METHODS
HTTP defines a set of request methods to indicate
the desired action to be performed for a given
resource

Express Routers
● Routers are simply an endpoint of a server
● We can perform various operations on routes using HTTP
methods such as GET, POST, PUT, and DELETE

Express Middleware
● Functions that have access to the request object (req), the
response object (res), and the next middleware function in
the application’s request-response cycle.
● Can Execute any code.
● Can Make changes to the request and the response objects.

Working With Files
● Reading from file
● Creating file
● Updating file
● Delete file

Hands on
● Let’s fetch from already existing api
● Serve Static Assets
● Server JSON to particular route
● Send request header details back
● Save data in a file and return have route to server data

References and resources
● MDN
● NODEJS
● EXPRESS DOCS
● FREECODECAMP

Thank You!
Adetunji Samuel
DSC, CDC & Creators community lead,
covenant university
@detunjisamuel ~ twitter

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Nodejs server lesson 3

1. Building Servers with Node.js Express Adetunji Samuel DSC, CDC & Creators community lead, covenant university @detunjisamuel ~ twitter

2. Agenda Summary ● What is the Npm and how does it work ● Http Requests and CORS ● Let’s try to use inbuilt node methods ● Finally a creating service ● Hands on

3. ● Command line tool to install, create, and share packages of JavaScript code written for Node.js ● inbuilt with node ● Saves packages in directory called node_modules ● npmjs.com/ What is NPM?

5. Some NPM Commands

7. EXPRESS

8. Your First Server

9. Express Things to know ● HTTP Methods ● Routes ● HTTP Status Codes ● Express Middlewares ● Nodemon ● CORS

10. HTTP METHODS HTTP defines a set of request methods to indicate the desired action to be performed for a given resource

11. HTTP METHODS

12. Express Routers ● Routers are simply an endpoint of a server ● We can perform various operations on routes using HTTP methods such as GET, POST, PUT, and DELETE

13. Express Routers

14. Express Middleware ● Functions that have access to the request object (req), the response object (res), and the next middleware function in the application’s request-response cycle. ● Can Execute any code. ● Can Make changes to the request and the response objects.

15. Working With Files ● Reading from file ● Creating file ● Updating file ● Delete file

16. File Operations

17. Hands on ● Let’s fetch from already existing api ● Serve Static Assets ● Server JSON to particular route ● Send request header details back ● Save data in a file and return have route to server data

18. References and resources ● MDN ● NODEJS ● EXPRESS DOCS ● FREECODECAMP

19. Thank You! Adetunji Samuel DSC, CDC & Creators community lead, covenant university @detunjisamuel ~ twitter

20. Thank You!