Javascript appears to be a language that everyone knows or has used at some point of time. It is ubiquitous because of the web. As opposed to Lua, Scheme, Scala

Javascript appears to be a language that everyone knows or has used at some point of time. It is ubiquitous because of the web. As opposed to Lua, Scheme, Scala, Python, etc., this will expose it to all programmers. It is one of the best languages for scripting and event based management of objects. Also as LLVM is maturing, it will be easy to build a layer on top of it for most popular languages - if at all needed - though that need would only be for comfort and previous exposure to that language than anything else. May be that is why Javascript was chosen.