For interface web developers, JavaScript skills are a must. First released in December 1995, the language recently celebrated its 25th anniversary. The JavaScript.com website notes that it is “an excellent language for beginners to write code,” and is often taught to high school and university students in introductory programming courses or introductory web development courses. , JavaScript is a client-side and server-side textual programming language that allows web pages to be made interactive. Whereas HTML and CSS are languages that impart structure and style to web pages, JavaScript provides web pages with interactive elements that engage the user.