How do I create an API using Express.js?

How do I create an API using Express.js?

To create an API using Express.js, you first need to set up a Node.js environment and install Express.

What are the basic steps to set it up?

1. Initialize a new Node.js project with npm init. 2. Install Express using npm install express. 3. Create a server file and set up routes.

Can you show me a simple example of a GET endpoint?

Sure! Here's a simple example:

const express = require('express');
const app = express();

app.get('/api', (req, res) => {
    res.send('Hello, World!');
});

app.listen(3000, () => {
    console.log('Server is running on port 3000');
});

How do I test this API?

You can test the API using tools like Postman or by simply visiting http://localhost:3000/api in your browser.