Node.js rest api example

API(Application Programming Interface) is a set of protocols, rules, and tools that allow different software applications to access allowed functionalities, and data, and interact with each other.

API is a service created for user applications that request data or some functionality from servers.

To give specific access to our system to other applications that may be useful to them, developers create APIs and give them endpoints to interact and access the server data.

1.

Before the release of ES6 which came with Fetch and libraries like Axios in 2015, it is the only way to call API.

XMLHttpRequests are still used in multiple places because all new and old browsers support this. 

• To implement advanced features like request cancellation and progress tracking, XMLHttpRequest is used.
• To maintain old codebases which are written before the announcement of ES6, we use XMLHttpRequest

Example: In this example, XMLHttpRequest is used to make an API call.

Explanation of the above code

Step A: Create an instance of

how to create rest api in javascript

how to call rest api in javascript