Can I use CoffeeScript instead of JS for node.js?
What are my restrictions if I want to code node.js and use CoffeeScript? Can I do anything I’d be able to do in JS? 8 Answers 8
node.js
Restart node upon changing a file
For someone who is coming from PHP background the process of killing node and starting it again after every code change, seems very tedious. Is there any flag when starting a script with node to automatically restart node when code change is saved? 8 Answers 8
How to convert Blob to File in JavaScript
I need to upload an image to NodeJS server to some directory. I am using connect-busboy node module for that. I had the dataURL of the image that I converted to blob using the following code: dataURLToBlob: function(dataURL) { var BASE64_MARKER = ‘;base64,’; if (dataURL.indexOf(BASE64_MARKER) == -1) { var parts = dataURL.split(‘,’); var contentType = … Read more
Why does calling a function in the Node.js REPL with )( work?
Why is it possible to call function in JavaScript like this, tested with node.js: ~$ node > function hi() { console.log(“Hello, World!”); }; undefined > hi [Function: hi] > hi() Hello, World! undefined > hi)( // WTF? Hello, World! undefined > Why does the last call, hi)(, work? Is it bug in node.js, bug in … Read more
Npm install failed with “cannot run in wd”
I am trying to get my node environment set up on a new Ubuntu 12.04 instance, with Node 0.8.14 already installed, but I ran into problems when I try to run npm install. So when I try npm install, it says that I need to run it as root or adminisrator: Error: EACCES, mkdir ‘/usr/local/lib/node_modules/coffee-script’ … Read more
Is there a compatibility list for Angular / Angular-CLI and Node.js?
I periodically run into the problem, having to spin up old Angular projects with deprecated dependencies of Angular. Because I unsually run the latest Node.js version (at least lates LTS version) I often had the problem, that I wasn’t able to get the old projects running. I solved this by using a node version manager, … Read more
How to edit a node module installed via npm?
I’m using the node_swiz module, which in turn uses the validator module. I want to make changes to the validator module, but I used npm install to install the modules/dependencies. Can I just make changes to the validator module inside of node_modules, or will that node_modules dependencies be re-created and the latest version gotten when … Read more
Unexpected results when working with very big integers on interpreted languages
I am trying to get the sum of 1 + 2 + … + 1000000000, but I’m getting funny results in PHP and Node.js. PHP $sum = 0; for($i = 0; $i <= 1000000000 ; $i++) { $sum += $i; } printf(“%s”, number_format($sum, 0, “”, “”)); // 500000000067108992 Node.js var sum = 0; for (i … Read more
How do you log content of a JSON object in Node.js?
Is it possible to print an objects contents e.g. methods and attributes in Node.js? At the moment I’m trying to print the session object and get the following: console.log(“Session:” + session); > Session:[object Object] Maybe in a similar way to print_r(array) in PHP, or using .toString in Java. 8 Answers 8
Socket.IO – how do I get a list of connected sockets/clients?
I’m trying to get a list of all the sockets/clients that are currently connected. io.sockets does not return an array, unfortunately. I know I could keep my own list using an array, but don’t think this is an optimal solution for 2 reasons: Redundancy. Socket.IO already keeps a copy of this list. Socket.IO provides method … Read more
