Hi. Many websites use javascript today and also major browsers enable it by default. What happens if you just follow the instruction to activate it?
Is javascript enabled? If not, enable it. If so, no clue what you can do as something is wrong with the page not your computer. I get that and similar errors quite often. Since I have found no solutions, I just ignore them. For example, here, on DP, I get this error on EVERY page: I do not block ads, so something that @digitalpoint has done is causing that error which I cannot do anything about.
Depends on your browser. You should be able to figure it out by checking all of the dropdown menus in your browser.