Originally named LiveScript, JavaScript was developed by Brendan Eich at Netscape in the mid-1990s. It was later renamed JavaScript in 1995.
JavaScript is an interpreted, object-based, client-side scripting language that allows you to create dynamic content on a web page. You can animate images, validate data, and create interactive elements. In other words, JavaScript adds behavior to web pages, and it is supported by most modern web browsers such as Chrome, Firefox, Edge, and Safari.