if you accept ecma script ~= Javascript then it has already taken over. pretty much everything connected to web except embeded and even some of those runs java

if you accept ecma script ~= Javascript then it has already taken over. pretty much everything connected to web except embeded and even some of those runs javascript. with crossbrowser fixer libs and to lesser extent standards it is closer than anything else to write once run anywhere. more people have access to js dev tools than any other language. js is the new entry drug for new ddevs.