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Also, in order to understand what the article is about, you will need some basic knowledge of HTML and CSS and JavaScript syntax and datatypes. We will try to keep things simple, so to work with queries we will use the axios library because of its simplicity and universality.

Cacheable – clients can cache server responses to improve performance.įrom the JavaScript side, the REST API integration can be viewed as a connection to a data source located at a specific address on the Internet, which can be accessed in a certain way through certain libraries.

The session state is stored on the client-side.

Stateless – no data from the client is stored on the server-side.

Client and server are independent of each other, and each of them can be replaced separately.

Client-server architecture – the client is responsible for the user interface, and the server is responsible for the backend and data storage.

Full constraints list can be viewed at the link. REST API ( Representational state transfer) is an API that uses HTTP requests for communication with web services and must comply with certain constraints. API acts as a layer between your application and external service.

These rules determine in which format and with which command set your application can access the service, as well as what data this service can return in a response. API (Application Programming Interface) can be considered as a set of rules that are shared by a particular service. To begin, let us define what is hidden under the API abbreviation. If you are faced with the task of accessing the API in your JavaScript application and don’t know where to start, this tutorial will help you figure it out quickly.īrowse the Best Free APIs List What is REST API (from a JavaScript perspective)? Often the application functionality is mainly related to interaction with various APIs. Today JavaScript successfully helps developers with both frontend and backend work. Over the years of its growth, this language has gone from a small add-on to a multifunctional and powerful tool. The modern web development world is impossible to imagine without JavaScript. Example: How to Build a ‘Comment Sentiment Analyzer’ App (with APIs & JavaScript).How To Connect to an API (with JavaScript).What is REST API (from a JavaScript perspective)?.