Connection problem with database from javascript file using mongoose

[Ani Ghosh]

I am not being able to connect to any database from any javascript file. I don't understand the problem as I had built some small projects earlier and at that time everything was working perfectly but since few days none of them are working.

[Ron McLeod]

I don't think anyone is going to be able to help you unless you share some details like:
  - where are you trying to connect from? - browser, Node.js, etc.
  - how are you trying to connect? - source code would be helpful
  - what error messages or unexpected behaviour are you seeing?
  - what are the versions of the various software components (mongodb, mongoose library, node.js, etc.)

[Tim Holloway]

If you are trying to connect directly to a database from a web client. you're effectively re-creating the sort of webapps that cause the SQL Slammer worm to trash major Internet applications years ago. Don't connect directly to a database from an Internet client

If you are trying to connect to a database from a webserver such as NodeJS, then the best bet is to use an API library. To the best of my (limited) knowledge, there's no universal database interface like JDBC for JavaScript on any JavaScript framework.

So we'd need to know what you are trying before we can give any advice.