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?
- 7. EXPRESS
- 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!