There is a common belief that the DOM emerged simultaneously with HTML and has always been an integral part of web development, with developers having tools for dynamic manipulation of HTML elements from the very beginning. However, this is far from the truth. In reality, nearly a decade passed between the emergence of HTML and the creation of the DOM! How did this come about?

It's undeniable that the web's development in the mid-90s progressed at an explosive rate. Just imagine — only four years passed from the creation of the first web page by Tim Berners-Lee to the launch of amazon.com. By 1996, the internet had become so widespread that the first promotional website for a movie, Space Jam, was launched.

However, web development itself was still quite primitive, with a very limited set of tools that couldn't keep up with the rapid industry growth. Consider this — the second numbered version of HTML appeared in 1995 (there wasn't officially a first version), JavaScript's first version was developed in the same year, and CSS1 was released in December 1996. Amidst all this, the DOM was still a distant prospect.

So what prompted the community to create a unified standard? In the mid-90s, the so-called First Browser War was in full swing, with two giants of the time, Netscape Navigator and Internet Explorer, battling it out. In the fight for market share, developers came up with new tricks and features, exacerbating the biggest problem of the time — the lack of a unified approach to implementing standards. Yes, I'm looking at you, Internet Explorer, and your ActiveX.

As a result, each browser had its own tools for working with HTML, meaning simple scripts for animating snowflakes might not work in a competitor's browser if you only tested your code in Internet Explorer or vice versa, in Netscape Navigator. This could and did lead to unpredictable behaviour, bloated code, and logical errors.

In 1994, the World Wide Web Consortium (W3C) was established to standardize web technologies and make life easier for web developers. One of the key initiatives of this organization was the creation of the DOM, or Document Object Model, to standardize interactions with web documents.

The first version of the DOM documentation was published in 1998, marking a significant milestone in web development history. Finally, a standardized way of representing and interacting with HTML documents was introduced, allowing developers to hope their snowflakes would fall the same way in all relevant browsers. The first DOM became the foundation for modern web applications.

However, this didn't mean all web development problems were solved that year. Rather, they reached a new level. Now, besides incompatibility with competitors, most browsers became incompatible with the standard. Some tried to fix this, some ignored it, and some pretended that the most standard standards were only what they did, while other standards were not so standard. The fact that the famous jQuery emerged only in 2006 vividly indicates that the cross-browser compatibility issue not only didn't disappear but flourished eight years after the DOM standard appeared.

But that's a story for another time.