Client-side scripting refers to the execution of scripts in a user's web browser rather than on the server. This approach enhances user experience by allowing for dynamic content updates, interactive features, and reduced server load. Common languages used for client-side scripting include JavaScript, HTML, and CSS. By leveraging client-side scripting, developers can create responsive web applications that react to user inputs in real-time. This technology is essential for modern web design, enabling functionalities such as form validation, animations, and asynchronous data loading, which contribute to a seamless browsing experience.