I think this is a really important point. Every browser vendor has spent huge amounts of dollars to increase the performance of Javascript. I don't know if ther

I think this is a really important point. Every browser vendor has spent huge amounts of dollars to increase the performance of Javascript. I don't know if there's another language that has enjoyed this level of investment... Maybe Java is closest, there are multiple companies working on their own VM implementations. The reason so much has been spent on Javascript: it runs in the web browser. For sure, people have found other reasons to like Javascript but at the bottom of the pile, money was spent because it was in the browser and the browser vendors wanted the browser to do more.