The programming language known for its use in web scripting is **JavaScript**. As a versatile and dynamic language, JavaScript enables developers to create interactive and engaging user interfaces for websites. It can be executed on both the client-side (in web browsers) and server-side (with technologies like Node.js), making it essential for modern web development. JavaScript frameworks and libraries, such as React and Vue.js, further enhance its capabilities, allowing for efficient building of single-page applications and providing rich user experiences.