sending api with limited fields in express

1. First, create a new Express application using the express package. This can be achieved by running the following command: const express = require('express'); const app = express();

2. Next, define a route that will handle the incoming API requests. This is done by using the app.get method, specifying the route path and a callback function to handle the request and send a response.

3. Inside the callback function, use the req.query object to access the limited fields that are being sent with the API request. These limited fields can be accessed using the keys provided in the request.

4. Once the limited fields are accessed, construct a response object containing only the required fields. This can be done by creating a new object and populating it with the necessary key-value pairs based on the limited fields received.

5. Finally, send the constructed response object using the res.send method to send the limited fields back to the client as the API response. This will fulfill the requirement of sending limited fields in the Express API response.

By following these steps, you can effectively handle incoming API requests in Express and send back a response containing only the specified limited fields.