That feature had dramatic impact on the development of the language - it's the source of its strengths and weaknesses.
Until the explosion of web and internet - when huge corporation suddenly realized how vital and important that part of technology is. And that's when interesting things started to happen.
But, money can make dreams real, especially if it's really big money. Huge companies invested tons of time, research and development into Browsers - and miracle happen. Flawed and buggy prototype became one the best dynamic language available.
It's also the fastest interpreted language - only two times slower than compiled Java, ten times faster than Ruby and fifteen times faster than Python.
Biggest flaw is that once some feature or bug is delivered, it's impossible to fix or alter it if it's break backward compatibility.
By Alex Craft