JavaScript is a high-level programming language that is commonly used to create interactive effects within web browsers. It was first introduced in 1995 and has since become one of the most widely used programming languages in the world.
JavaScript is often used to add dynamic functionality to web pages, such as validating user input, updating content without requiring a page reload, and creating animations and interactive user interfaces. It can also be used to create full-fledged web applications and server-side applications through frameworks like Node.js.
JavaScript is a versatile language that can be used in many different contexts, including web development, game development, and desktop application development. It is supported by all major web browsers, including Chrome, Firefox, Safari, and Edge, making it an essential skill for web developers.