JavaScript [JS]

JavaScript is a high-level programming language widely used for creating interactive web pages and web applications. JavaScript runs on the client-side (in the user’s web browser), allowing for dynamic modification of page content, responding to user actions, and exchanging data with the server without reloading the page.

Examples of JavaScript usage:
– Validating form input before submitting data to the server.
– Creating animations, sliders, pop-ups, and other interactive elements.
– Dynamically updating page content without reloading (e.g., displaying new messages in a chat).

JavaScript is also used on the server-side (e.g., with Node.js) for building full-fledged web applications and APIs. Knowledge of JavaScript is essential for developers aiming to create modern, interactive websites and applications.