No, node.js is not a web server that serves files and folders. It doesn't even have to be a web server. It's simply a collection of libraries written specifical

No, node.js is not a web server that serves files and folders. It doesn't even have to be a web server. It's simply a collection of libraries written specifically to be asyncronous. It's kind of like Ruby and Python, but with asynchronous libraries and obviously using JavaScript. Asyncronous means non-blocking, so node.js makes use of things like callbacks to prevent your code from blocking. The Wikipedia article would be a good resource for further research. (This stuff can get pretty complicated and I don't understand everything fully. Please point out things I got wrong!)