'Javascript' is a programming language commonly used in web development to create interactive and dynamic content on websites. It enables functionalities like form submissions, animations, updating content without reloading the page, and other interactive elements.

In web analytics, Javascript is often used in tags and tracking codes to collect data about user interactions and behavior on a website. Its versatility and compatibility across different browsers make it a fundamental tool in modern web development and analytics.

Javascript's role extends beyond basic site functionality; it plays a crucial part in gathering user insights and driving personalized experiences. Its ability to manipulate website elements in real-time allows for more engaging and user-friendly web interactions.