Switzerland is a country of its own class and in most cases shouldn't and can't be compared to the rest of Europe. Yes,the salaries are higher, much higher, compared to other countries in Europe,but it's not that high either. Switzerland is very expensive. Also, because it's a high cost country,a lot of of the tech jobs seem to be on the high end of the spectrum, which means some JS+ HTML knowledge wouldn't result in employment, which may be the case in some places in the US.