Learning Objective:

• In this article, you will learn to implement a rest endpoint and print a text.

• http://localhost:3000/api

Task 1: Add a REST endpoint "api" ( app.js)

• Existing Code:

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

• New Code:

    app.get('/api', (req, res) => res.send('REST API is working!'));

Internals

• Syntax

    app.METHOD(PATH, HANDLER);

• app is an instance of express.
• METHOD is an HTTP request method, in lowercase.( get/post/put/patch/delete)
• PATH is a path on the server.
• HANDLER is the function executed when the route is matched.

Testing: Run the Server

    nodemon app.js

• Test - http://localhost:3000/api
• It should print "REST API is working!"

Output:

Git Instructions

  git status
  git app.js
  git commit -m "Added api endpoint"

Summary

• Successfully, we have create an endpoint and tested it.