Difference between `npm start` & `node app.js`, when starting app?

From the man page, npm start: runs a package’s “start” script, if one was provided. If no version is specified, then it starts the “active” version. Admittedly, that description is completely unhelpful, and that’s all it says. At least it’s more documented than socket.io. Anyhow, what really happens is that npm looks in your package.json … Read more

Proxy with express.js

request has been deprecated as of February 2020, I’ll leave the answer below for historical reasons, but please consider moving to an alternative listed in this issue. Archive I did something similar but I used request instead: var request = require(‘request’); app.get(“https://stackoverflow.com/”, function(req,res) { //modify the url in any way you want var newurl=”http://google.com/”; request(newurl).pipe(res); … Read more

How do I move files in node.js?

According to seppo0010 comment, I used the rename function to do that. http://nodejs.org/docs/latest/api/fs.html#fs_fs_rename_oldpath_newpath_callback fs.rename(oldPath, newPath, callback) Added in: v0.0.2 oldPath <String> | <Buffer> newPath <String> | <Buffer> callback <Function> Asynchronous rename(2). No arguments other than a possible exception are given to the completion callback.

What are “res” and “req” parameters in Express functions?

req is an object containing information about the HTTP request that raised the event. In response to req, you use res to send back the desired HTTP response. Those parameters can be named anything. You could change that code to this if it’s more clear: app.get(‘/user/:id’, function(request, response){ response.send(‘user ‘ + request.params.id); }); Edit: Say … Read more

Get hostname of current request in node.js Express

You can use the os Module: var os = require(“os”); os.hostname(); See http://nodejs.org/docs/latest/api/os.html#os_os_hostname Caveats: if you can work with the IP address — Machines may have several Network Cards and unless you specify it node will listen on all of them, so you don’t know on which NIC the request came in, before it comes … Read more