Question

Does serverside javascript exist, if yes, is it possible to clientside javascript to interact with serverside javascript?

For example, is it possible for clientside javascript to request from the serverside javascript to return part of a json file which is stored on the server without downloading the whole json file?

I understand that I can do this with other serverside languages like aspx, php etc etc, but wanted to know if serverside javascript exists and if it can do something similar with json files?

Answer 1

Does serverside javascript exist

http://en.wikipedia.org/wiki/Comparison_of_server-side_JavaScript_solutions

Node.js is the current, popular way to do this.

if yes, is it possible to clientside javascript to interact with serverside javascript?

Yes. In the context of the WWW, this is usually done the same way that any other communication with server side programs is done: By making HTTP requests (usually via XMLHttpRequest).

For example, is it possible for clientside javascript to request from the serverside javascript to return part of a json file which is stored on the server without downloading the whole json file?

I understand that I can do this with other serverside languages like aspx, php etc etc, but wanted to know if serverside javascript exists and if it can do something similar with json files?

JavaScript is a programming language. It can do more or less anything on the server that any other language can do.