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JavaScript: Client-side vs Server-side

JavaScript is a computer language that is frequently used to give web pages dynamic functionality and interactivity. There are two ways to create the scripts; the client or server. JavaScript can be executed on both the client and server sides, depending on the environment in which it is running. The server does not need to be connected for client-side scripting but requires browsers to run scripts on the client system.

This article will demonstrate the server-side and the client-side JavaScript.

JavaScript: Client-side vs Server-side

First, understand the client-side and server-side JavaScript concepts.

Client-side JavaScript

In client-side JavaScript, the code is executed on the client’s web browser rather than on a server. This means that the code is downloaded to the user’s device and run locally, rather than being run on a remote server and the results being sent back to the client.

It is commonly used to create interactive and dynamic effects on websites, such as animating page elements, validating form input, and creating interactive maps. It can also make HTTP requests to a server and retrieve data. However, this is typically done asynchronously using AJAX or similar techniques rather than through traditional page reloads.

Client-side JavaScript is typically written in the form of scripts that are included in HTML documents and executed by the web browser. It can also be included in separate files and loaded into an HTML document using the <script> tag.

Server-side JavaScript

Server-side JavaScript uses JavaScript on a server to create dynamic web pages and applications. With server-side JavaScript, the code is run on the server instead of the client’s web browser.

There are several technologies and frameworks that enable the use of JavaScript on the server, such as Node.js. These technologies offer a runtime environment that enables the server to run JavaScript code. Server-side JavaScript is commonly used to build scalable, high-performance web applications that handle large amounts of data and traffic. It also creates APIs (Application Programming Interfaces) that allow client-side applications (such as web or mobile apps) to communicate with the server.

Client-side JavaScript vs Server-side JavaScript

In short, client-side JavaScript adds interactivity and dynamic functionality to websites, while server-side JavaScript is used to build back-end server applications and provide server-side services.


The client-side JavaScript code is executed on the client’s web browser and creates interactive and dynamic effects on websites. While Server-side JavaScript is executed on the server and typically runs on the server-side environment, such as Node.js. This type of JavaScript is often used to build back-end server applications and to provide server-side services, such as data storage and retrieval. This article demonstrated server-side and client-side JavaScript.

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Source: linuxhint.com

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