JavaScript

JavaScript was created in May 1995 by Brendan Eich, who had joined Netscape Communications in April 1995. Eich developed the first JavaScript engine, originally codenamed "Mocha," in ten consecutive days during May 1995. The language emerged from Netscape's strategic recognition of a fundamental limitation facing the early Web. Web pages could only be static, lacking any dynamic behaviour after being loaded in a browser. Netscape sought to extend the Web's capabilities beyond these constraints by introducing a programming language accessible to a broad audience. Netscape's leadership initially pursued two parallel strategies: a partnership with Sun Microsystems to embed Java directly in the browser, and simultaneously, the hiring of Brendan Eich to integrate Scheme. Ultimately, management chose a different path: to create an entirely new language combining Java-like syntax with functional programming influences. The objective was ambitious — to design a "language for the masses," meant to help non-programmers create dynamic, interactive websites. The language was initially shipped under the name "LiveScript" in a beta version of Navigator in September 1995, then renamed to JavaScript for the official December 1995 release. Eich himself would later acknowledge that the name change was a marketing strategy by Netscape, capitalising on Java's popularity at the time. The introduction of JavaScript fundamentally transformed the Web: developers could now validate form data on the client side, create interactive maps and charts, and add dynamic effects without requiring page reloads. In 1997, ECMA International standardised JavaScript under the name ECMAScript, enabling universal adoption across competing browsers. With the advent of Node.js in 2009 and Google's V8 engine, JavaScript migrated to the server side and became a universal language. Today JavaScript is the most widely used programming language in the world and the only language executed natively by all web browsers, the foundation of all interactivity on the modern Web.