node js console debug

This article describes how to create a web calculator using node. js + express. For more information, see Environment: Host: WIN10 Express installation: 1. install express-generator Enter the following command: npm install -g express-generator 2. install express Enter the following command: npm install -g express 3. verify whether the installation is successful Enter the command: express-V View help: e

Node. js removes BOM headers in batches and node. js removes bom My colleagues wrote a tool, but there is a bug that after the file is replaced, the format of the original file is changed to utf8 BOM. XML with BOM may not be readable on Mac, therefore, you need to write a tool for processing. In fact, the idea is rela

Node. js static server implementation method, node. js static Server When you enter a url, the url may correspond to a resource (File) on the server or a directory. The So server analyzes the url and does different things for different situations. If the url corresponds to a file, the server returns the file. If the ur

', successHandler );}If (typeof errorHandler = 'function '){This. once ('error', errorHandler );}If (typeof progressHandler === 'function '){This. on ('process', progressHandler );}Return this;} // Define the latency object// Contains a state and a promise objectVar Deferred = function (){This. state = 'unfulfiled ';This. promise = new Promise ();}Deferred. prototype. resolve = function (obj ){This. state = 'fullfiled ';This. promise. emit ('success', obj );}Deferred. prototype. reject = functi

This article mainly introduces node. use socket in js. io method. For more information, see use socket. use io to create a socket. i/O server. however, this server depends on a created http server. After the http server is running, use the listen method to append a socket. io server to the http server. The Code is as follows: Var sio = require ("scoket. io ");Var socket = sio. listen (server ); Socket i

This article mainly introduces node. js mongodb Operations Learning summary, this article provides mongodb to create a database, insert data, connect to the mongodb database and query data and other code instances, friends can refer to the next, preparation 1. Create a table to be read in mongodb Create a database named Test The Code is as follows: Use extension test; Insert data to the user table The C

Node. js public platform development tutorial, node. js public How can nodejs be used to develop public platforms? Let's not talk about anything more. First, let's briefly introduce the basic principles of the public platform. The server is equivalent to a forwarding server. A terminal (such as a mobile phone or tablet

Nodejs code snippets worth collecting. You can add them to your favorites and use them in subsequent work, if you are interested, you can refer to the following code snippets worth collecting for your reference: 1. For details about node. js static resource compression and caching, refer to: node. js creates a static

Create simple chat rooms for Node. js and simple chat rooms for node. js I read about TCP and wrote a NET-based chat room. Var net = require ('net'); var count = 0, users ={}; var server = net. createServer (function (conn) {console. log ('connection'); conn. write ("\ r \

This article mainly introduces the implementation of multi-process by child_process in Node. js. For more information, see The code is as follows: Var http = require ('http ');Function fib (n ){If (n Return 1;} Else {Return fib (n-2) + fib (n-1 );}}Var server = http. createServer (function (req, res ){Var num = parseInt (req. url. substring (1), 10 );Res. writeHead (200 );Res. end (fib (num) + "\ n ");});

This article mainly introduces the node. js game sharing that allows multiple users to move their mouse online at the same time. This article provides the server and client code and running methods. For more information, see the recent project requirements, so I studied the websocket Implementation of nodejs, socket. io, which is a widely used framework of nodejs background applications websocket. Preparat

Simple implementation of node. js Image Upload and node. js Image Upload The examples in this article share the code for uploading node. js images for your reference. The details are as follows: 1.

Command line arguments is often used to modify the behavior of a application or specify needed parameters for operation. In this lesson, you'll learn how to access the command line arguments passed to your node. JS application as well as dif Ferent strategies for evaluating and accessing them.To catch what arguement user passed on from command line, we can use 'process.argv '.If We log out:// Server.js Cons

= function (object ){Var util = require ('til ');Process. stdout. write (util. inspect (object) + '\ n ');}Var time = function (label ){Times [label] = Date. now ();}Var timeEnd = function (label ){Var duration = Date. now ()-times [label];Exports. log ('undefined: nanm', label, duration );}Var trace = function (label ){// TODO probably can to do this better with V8's debug object once that is// Exposed.Var err = new Error;Err. name = 'track ';Err. m

instance is obtained, you can use net. Socket to do whatever you want. I listened to the data event to receive the data played by the server, and listened to the close event to exit the process. For specific API of net. Socket, refer to https://nodejs.org/api/net.html#net_class_net_socket.Running example There is a saying in the comments that the time is too late. Well, you can run it. Run "node echoServer. js