๐๐๐ถ๐น๐ฑ ๐ ๐ฅ๐๐ฆ๐ง ๐๐ฃ๐ ๐ช๐ถ๐๐ต ๐ก๐ผ๐ฑ๐ฒ.๐ท๐ ๐ฎ๐ป๐ฑ ๐๐ ๐ฝ๐ฟ๐ฒ๐๐
Mobile apps and websites use APIs to get data. You can build your own REST API from scratch using Node.js and Express.
This tutorial teaches you CRUD operations. CRUD stands for Create, Read, Update, and Delete. These are the core parts of any real app.
You only need basic JavaScript to start.
What you will build:
- A way to see all books
- A way to find one book by ID
- A way to add new books
- A way to update book details
- A way to delete books
Setup requirements:
- Node.js installed
- A code editor like VS Code
- A terminal
- Postman or Thunder Client to test your work
Quick setup steps:
- Create a folder: mkdir books-api
- Enter the folder: cd books-api
- Initialize project: npm init -y
- Install Express: npm install express
Create an index.js file. Use express.json() to let your API read JSON data. We will use a simple array to store our data instead of a database for this lesson.
The API routes:
- GET /books: Returns the full list
- GET /books/:id: Returns one specific book
- POST /books: Adds a new book to your list
- PUT /books/:id: Changes information for an existing book
- DELETE /books/:id: Removes a book from the list
Once you finish this, your next steps are:
- Connect a real database like MongoDB or PostgreSQL
- Add security with JWT tokens
- Deploy your API to the internet using Railway or Render
Every major app like Instagram or Twitter uses these same principles. Start with these basics to understand how the web works.
Source: https://dev.to/onlyeugene/how-to-build-a-rest-api-with-nodejs-and-express-from-scratch-3hfa