How can I embed c++ in a JavaScript file or in c#

Question

For biometric

Answer 1

Make a assembly ( .dll / class library) in the c++ code. And add it as reference in a c# project.

Answer 2

If am to write an Erlange programing language with assembly what ide can I use for it

Answer 3

I have no experience with erlang.

Does this linkg help you ?

https://stackoverflow.com/questions/1137447/whats-a-good-ide-for-erlang-programming