In just ten days, Brendan Eich created the language that would eventually power 98.9 percent of all websites, yet the original intent was to build a simple scripting tool for non-programmers. The year was 1995, and the internet was a static place where web pages could not change after they loaded. Netscape Communications, the company behind the dominant browser of the era, needed a way to make their software interactive. They hired Eich, a 26-year-old programmer, to implement a language based on Scheme, a functional programming language. However, management quickly pivoted, demanding a syntax that resembled Java, a hot new language at the time, rather than the Lisp-like Scheme Eich had been working on. The result was a language born of compromise, with a name chosen for marketing purposes to ride the coattails of Java's popularity, despite having almost no technical relationship to it. This linguistic accident would go on to become the most ubiquitous programming language in human history.
The Browser Wars
The early history of the web was defined by a brutal competition between Netscape and Microsoft, a conflict that nearly fractured the language itself. When Microsoft released Internet Explorer in 1995, they introduced their own version of the language, which they called JScript. While the core concepts were similar, the implementations diverged significantly, creating a chaotic environment where a website that worked perfectly in Netscape Navigator would break in Internet Explorer. Developers were forced to include logos stating best viewed in Netscape or best viewed in Internet Explorer, a visual symbol of the fragmentation that plagued the industry. By the early 2000s, Microsoft had captured 95 percent of the browser market, effectively making JScript the de facto standard and stalling the progress of the language. The standards process, which had begun in 1996 with the submission of JavaScript to Ecma International, was undermined by this market dominance. Microsoft eventually stopped collaborating on the ECMA work, causing the ambitious ECMAScript 4 standard to be mothballed and leaving the web in a state of stagnation for years.The Renaissance of Code
The stagnation of the early 2000s ended with the rise of open-source communities and a new generation of browsers that prioritized speed and standards compliance. In 2004, Mozilla released Firefox, which began to chip away at Internet Explorer's monopoly and brought a renewed focus on web standards. A pivotal moment occurred in 2005 when Jesse James Garrett coined the term Ajax, describing a method to load data in the background without reloading the entire page. This sparked a renaissance of JavaScript, leading to the creation of libraries like jQuery, Prototype, and Dojo Toolkit that made complex interactions possible. The industry was further revolutionized in 2008 when Google launched Chrome with the V8 JavaScript engine, which utilized just-in-time compilation to make the language significantly faster than its competitors. This technological leap forced all other browser vendors to overhaul their engines, leading to a conference in Oslo in July 2008 where disparate parties agreed to combine their work. The result was the ECMAScript 5 standard, released in December 2009, which unified the fragmented ecosystem and set the stage for the modern web.